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Hoover A, Watson D, Reimche P, Tanner L, Gilchrist L, Finch M, Messinger YH, Turcotte LM. Impact of the COVID-19 pandemic on utilization and cost for care of pediatric and young adult ALL. BMC Res Notes 2024; 17:112. [PMID: 38644484 PMCID: PMC11034092 DOI: 10.1186/s13104-024-06768-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Accepted: 04/04/2024] [Indexed: 04/23/2024] Open
Abstract
OBJECTIVE Acute lymphoblastic leukemia (ALL) is the most common childhood malignancy and among the most common malignancies in young adults and requires a unique pattern of healthcare utilization including an acute/emergent presentation and an intensive initial 8 months of therapy followed by two years of outpatient treatment. The COVID-19 pandemic caused massive global disruptions in healthcare use and delivery. This report aims to examine the effects of the COVID-19 pandemic on the presentation, diagnosis and continued management of childhood and young adult ALL in regard to utilization and cost of care among commercially insured individuals in the United States. RESULTS Utilizing a commercial insurance claims database, 529 pediatric and young adult patients were identified who were diagnosed with ALL between January 2016 and March 2021. New diagnoses were evaluated by era and demographics. Utilization was measured by COVID-related era as number of inpatient and outpatient encounters, inpatient days, and cumulative cost during the initial 8 months of therapy. None of these cost or utilization factors changed significantly during or shortly after the pandemic. These findings reinforce that the necessary care for pediatric and young adult ALL was unwavering despite the massive shifts in the healthcare system caused by the COVID-19 pandemic. This provides a valuable benchmark as we further examine the factors that influence the pandemic's impact on health equity and access to care, especially in vulnerable pediatric and young adult populations. This is the first investigation of the effect of the COVID-19 pandemic on utilization and cost of care in pediatric and young adult cancer.
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Affiliation(s)
- Alex Hoover
- Optum Labs Visiting Fellow, Division of Pediatric Blood and Marrow Transplantation, University of Minnesota Medical School, Mayo Mail Code 366, 420 Delaware St SE, 55455, Minneapolis, MN, USA.
| | | | | | | | - Laura Gilchrist
- Children's Minnesota, Minneapolis, MN, USA
- St. Catherine University, St. Paul, MN, USA
| | - Mike Finch
- Children's Minnesota, Minneapolis, MN, USA
| | | | - Lucie M Turcotte
- Optum Labs Visiting Fellow, Division of Pediatric Blood and Marrow Transplantation, University of Minnesota Medical School, Mayo Mail Code 366, 420 Delaware St SE, 55455, Minneapolis, MN, USA
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Hoover A, Reimche P, Watson D, Tanner L, Gilchrist L, Finch M, Messinger YH, Turcotte LM. Healthcare cost and utilization for chimeric antigen receptor (CAR) T-cell therapy in the treatment of pediatric acute lymphoblastic leukemia: A commercial insurance claims database analysis. Cancer Rep (Hoboken) 2024; 7:e1980. [PMID: 38217445 PMCID: PMC10884615 DOI: 10.1002/cnr2.1980] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Revised: 12/11/2023] [Accepted: 12/28/2023] [Indexed: 01/15/2024] Open
Abstract
BACKGROUND B-lineage acute lymphoblastic leukemia (B-ALL) is the most common malignancy of childhood. With the introduction of novel cellular therapies, cost of care is a critical component and the financial burden experienced by patients and society requires evaluation. AIMS This study aims to assess the utilization and cost of care for chimeric antigen receptor T-cell (CAR-T) therapy for pediatric ALL patients with commercial insurance coverage in the United States. METHODS AND RESULTS Using de-identified commercial insurance data from the OptumLabs® Data Warehouse, a cohort of 37 patients, aged 1-25 years, with B-ALL treated with CAR-T therapy between Oct 2016 and Dec 2021 in the United States was identified. Cost was evaluated for a 90 day period encompassing CAR-T infusion and by administration and complication characteristics. Among the 37 identified B-ALL patients that received a CAR-T product infusion, 14 patients were female, median age at administration was 13 years. The median 90-day total cost was $620,500 (Mean: $589,108). Inpatient cost accounted for approximately 71% of the total cost with an average of 28 inpatient days per patient. Although inpatient cost was slightly higher in the older age group (aged 10-25 years) and in patients with a code for cytokine release syndrome (CRS), these differences were not statistically significant. CONCLUSION This real-world cost analysis shows for the first time the encompassing cost of CAR-T therapy for pediatric B-ALL patients in the US with commercial insurance. This study provides a valuable benchmark that can be used to analyze the financial implications of CAR-T therapy for pediatric B-ALL therapy on health systems.
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Affiliation(s)
- Alex Hoover
- Optum Labs Visiting Fellow, Department of PediatricsUniversity of MinnesotaMinneapolisMinnesotaUSA
| | - Paige Reimche
- Department of PediatricsChildren's MinnesotaMinneapolisMinnesotaUSA
| | - Dave Watson
- Department of PediatricsChildren's MinnesotaMinneapolisMinnesotaUSA
| | - Lynn Tanner
- Department of PediatricsChildren's MinnesotaMinneapolisMinnesotaUSA
| | - Laura Gilchrist
- Department of PediatricsChildren's MinnesotaMinneapolisMinnesotaUSA
- Graduate College, Division of Physical TherapySt. Catherine UniversitySt. PaulMinnesotaUSA
| | - Mike Finch
- Department of PediatricsChildren's MinnesotaMinneapolisMinnesotaUSA
| | | | - Lucie M. Turcotte
- Optum Labs Visiting Fellow, Department of PediatricsUniversity of MinnesotaMinneapolisMinnesotaUSA
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Hoover A, Watson D, Reimche P, Tanner L, Gilchrist L, Finch M, Messinger Y, Turcotte L. Impact of the COVID-19 Pandemic on Utilization and Cost for Care of Pediatric ALL. Res Sq 2023:rs.3.rs-3706388. [PMID: 38168364 PMCID: PMC10760222 DOI: 10.21203/rs.3.rs-3706388/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2024]
Abstract
Objective Acute lymphoblastic leukemia (ALL) is the most common childhood malignancy and requires a unique pattern of healthcare utilization including an acute/emergent presentation and an intensive initial 8 months of therapy followed by two years of outpatient treatment. The COVID-19 pandemic caused massive global disruptions in healthcare use and delivery. This report aims to examine the effects of the COVID-19 pandemic on the presentation, diagnosis and continued management of childhood ALL in regard to utilization and cost of care. Results Utilizing a commercial insurance claims database, 529 pediatric patients were identified who were diagnosed with ALL and completed their initial 8 months of treatment between January 2016 and December 2021. New diagnoses were evaluated by era and demographics. Utilization was measured by COVID-related era as number of inpatient and outpatient encounters, inpatient days, and cumulative cost. None of these cost or utilization factors changed significantly during or shortly after the pandemic. These findings reinforce that the necessary care for pediatric ALL is largely inflexible and was unwavering despite the massive shifts in the healthcare system caused by the COVID-19 pandemic. This provides a valuable benchmark as we further examine the factors that influence the pandemic's impact on health equity and access to care, especially in vulnerable pediatric populations. This is the first investigation of the effect of the COVID-19 pandemic on utilization and cost of care in pediatric cancer.
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Gilchrist L, Tanner L, Finch M, Watson D, Hoover A, Turcotte L, Messinger Y. Utilization and Cost of Outpatient Rehabilitation Services for Pediatric Patients Treated for Acute Lymphoblastic Leukemia Using a Commercial Claims Database. Arch Phys Med Rehabil 2023; 104:1857-1864. [PMID: 37150426 PMCID: PMC10625645 DOI: 10.1016/j.apmr.2023.04.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2022] [Revised: 03/17/2023] [Accepted: 04/11/2023] [Indexed: 05/09/2023]
Abstract
OBJECTIVE To investigate the temporal trends and factors associated with outpatient rehabilitation utilization and costs for pediatric acute lymphoblastic leukemia (ALL). DESIGN Deidentified administrative claims data and longitudinal health information on patients representing a mixture of ages, ethnicities, and geographic regions across the United States were accessed using Optum Labs Data Warehouse. Regression models were constructed to assess associations of outpatient rehabilitation with age, sex, race and ethnicity, year of diagnosis, and region. SETTING Outpatient rehabilitation. PARTICIPANTS 1000 Patients aged 1-30 years with a new diagnosis of ALL between 1993 and 2017 and continuous insurance coverage (N=1000). INTERVENTION Not applicable. MAIN OUTCOME MEASURES Outpatient rehabilitation service utilization and cost based on reimbursed charge codes, summarized over 36 months after cancer diagnosis. RESULTS In 1000 patients, utilization of outpatient rehabilitation services increased from 20% in 1993-2002 to 55% in 2013-2017. In the earliest era examined, physical and/or occupational therapy was provided to 18% and increased to 54% in the latest years. Speech service utilization remained between 5%-8% across timepoints. Inflation-adjusted cost for provision of services did not change significantly across time and remained low, accounting for a median of 1.3% (Q1, Q3 0.3, 3.4) of total treatment cost in 1993-2002 and decreasing to a median 0.4% (Q1, Q3, 0.1, 1.0) in 2013-2017. Age 1 to 5 years at ALL diagnosis was associated with increased rehabilitation visit number and cost, and treatment in the Midwest was associated with increased likelihood of outpatient rehabilitation service utilization compared to other geographic regions. CONCLUSIONS Outpatient rehabilitation services are being increasingly provided to patients with ALL at a relatively low cost per patient, yet geographic variability in care utilization is evident. These services do not add excessively to the overall cost of leukemia care and thus cost containment should not be an excuse to limit access.
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Affiliation(s)
- Laura Gilchrist
- Cancer and Blood Disorder Program, Children's Minnesota, Minneapolis, MN; Doctor of Physical Therapy Program, St. Catherine University, St. Paul, MN.
| | - Lynn Tanner
- Cancer and Blood Disorder Program, Children's Minnesota, Minneapolis, MN
| | - Mike Finch
- Cancer and Blood Disorder Program, Children's Minnesota, Minneapolis, MN
| | - Dave Watson
- Cancer and Blood Disorder Program, Children's Minnesota, Minneapolis, MN
| | - Alex Hoover
- University of Minnesota Medical School, Minneapolis, MN
| | | | - Yoav Messinger
- Cancer and Blood Disorder Program, Children's Minnesota, Minneapolis, MN
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Chen Z, Jin W, Hoover A, Chao Y, Ma Y. Decoding the microbiome: advances in genetic manipulation for gut bacteria. Trends Microbiol 2023; 31:1143-1161. [PMID: 37394299 DOI: 10.1016/j.tim.2023.05.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Revised: 05/15/2023] [Accepted: 05/16/2023] [Indexed: 07/04/2023]
Abstract
Studies of the gut microbiota have revealed associations between specific bacterial species or community compositions with health and disease, yet the causal mechanisms underlying microbiota gene-host interactions remain poorly understood. This is partly due to limited genetic manipulation (GM) tools for gut bacteria. Here, we review current advances and challenges in the development of GM approaches, including clustered regularly interspaced short palindromic repeats (CRISPR)-Cas and transposase-based systems in either model or non-model gut bacteria. By overcoming barriers to 'taming' the gut microbiome, GM tools allow molecular understanding of host-microbiome associations and accelerate microbiome engineering for clinical treatment of cancer and metabolic disorders. Finally, we provide perspectives on the future development of GM for gut microbiome species, where more effort should be placed on assembling a generalized GM pipeline to accelerate the application of groundbreaking GM tools in non-model gut bacteria towards both basic understanding and clinical translation.
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Affiliation(s)
- Ziying Chen
- Department of Colorectal Surgery, Fudan University Shanghai Cancer Center, Shanghai 200031, China; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200031, China; The Center for Microbes, Development and Health (CMDH), CAS Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai 200031, China
| | - Wenbing Jin
- Jill Roberts Institute for Research in Inflammatory Bowel Disease, Weill Cornell Medicine, Cornell University, New York, NY 10021, USA; Friedman Center for Nutrition and Inflammation, Weill Cornell Medicine, Cornell University, New York, NY 10021, USA
| | - Alex Hoover
- Ben May Department for Cancer Research, the University of Chicago, Chicago, IL, USA
| | - Yanjie Chao
- The Center for Microbes, Development and Health (CMDH), CAS Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai 200031, China.
| | - Yanlei Ma
- Department of Colorectal Surgery, Fudan University Shanghai Cancer Center, Shanghai 200031, China; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200031, China.
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Hoover A, Thielen BK, Ebens CL. Fever and neutropenia in pediatric oncology and stem cell transplant patients: an editorial commentary on updated international clinical practice guidelines. Transl Pediatr 2023; 12:1908-1912. [PMID: 37969121 PMCID: PMC10644023 DOI: 10.21037/tp-23-368] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Accepted: 10/09/2023] [Indexed: 11/17/2023] Open
Affiliation(s)
- Alex Hoover
- Division of Hematology/Oncology, Department of Pediatrics, University of Minnesota, Minneapolis, MN, USA
| | - Beth K. Thielen
- Division of Infectious Diseases, Department of Pediatrics, Global Pediatrics Program, Minneapolis, MN, USA
| | - Christen L. Ebens
- Division of Blood and Marrow Transplant & Cellular Therapy, Department of Pediatrics, University of Minnesota, Minneapolis, MN, USA
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Hoover A, Cho J, Reddy K. Survey of ASCO Sponsored Oncology Interest Groups in the United States Assessing Medical Student Perceptions of Education in Radiation Oncology and Future Employment Prospects. Int J Radiat Oncol Biol Phys 2023; 117:e517. [PMID: 37785613 DOI: 10.1016/j.ijrobp.2023.06.1781] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) Over the last five years, applications to radiation oncology residency programs among graduates of medical schools in the United States (US) have declined by nearly 50% with a corresponding increase in unfilled positions in the National Resident Matching Program. This has led to ongoing concern regarding the future of the radiation oncology workforce and speculation regarding contributing factors. There are no published data substantiating medical student viewpoints on these issues. To better understand medical student perceptions of oncology specialties (medical oncology (MO), radiation oncology (RO), and surgical oncology/surgical subspecialties (SO)) and factors contributing to their career choices, we conducted a survey among oncology interest groups sponsored by the American Society of Clinical Oncology (ASCO). Survey content emphasized relative impressions of oncology specialties, exposure to these fields during medical school, and perceptions of future employment prospects. MATERIALS/METHODS An IRB-approved thirty-item questionnaire was distributed electronically via SurveyMonkey to US medical student members of ASCO sponsored interest groups. Participation was optional at the institutional and individual level and responses anonymous. Chi square test or Fisher's exact test was used to compare categorical variables. RESULTS Two-hundred seventy-nine students completed the survey (37% male, 62% female; 42% White, 40% Asian, 18% underrepresented minorities). Students report receiving less exposure to radiation oncology during medical school: 19% report RO is not included in their curriculum vs. 4% for MO (p<0.01); 77% report receiving lectures from MO faculty, 33% from RO, and 41% from SO (p <0.01); 41% were encouraged to consider RO as a specialty, compared to 62 % for MO and 42% for SO (p < 0.01); 45% report having a clear understanding of role of MO in oncology care vs. only 25% for RO and 38% for SO (p<0.01); 41% saw MO as leaders of the multidisciplinary cancer team, 1 % for RO, and 2% for SO, 47% felt all played equal roles (p<0.01). Students have more negative perceptions of future career prospects for RO: 81% feel that job prospects for MO are strong, 55% for RO and 73% for SO (p<0.01); 54% feel strongly that jobs are available in desirable geographic locations for MO, 36% for RO, 48% for SO (p<0.01); 27% of students report concerns about the future viability of RO, 10% for MO, and 11% for SO (p<0.01). CONCLUSION Compared to other oncology specialties, students have less exposure to RO, less understanding of the role of RO in multidisciplinary cancer care, and more pessimism about the future job market/specialty viability. These are likely contributing factors to declining interest in RO among graduates of US medical schools. Current radiation oncologists should increase efforts to improve medical student interest and understanding of RO.
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Affiliation(s)
- A Hoover
- Department of Radiation Oncology, University of Kansas Medical Center, Kansas City, KS
| | - J Cho
- Department of Radiation Oncology, University of Kansas Medical Center, Kansas City, KS
| | - K Reddy
- Department of Radiation Oncology, University of Kansas Medical Center, Kansas City, KS
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Hoang MK, Donald J, Hoover A. Correlation of Post-Treatment Biopsy and Fluorodeoxyglucose PET/CT Findings Following Definitive Chemotherapy and Radiation for Cervical Cancer. Int J Radiat Oncol Biol Phys 2023; 117:e517-e518. [PMID: 37785614 DOI: 10.1016/j.ijrobp.2023.06.1782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) Concurrent chemotherapy and external beam radiation with brachytherapy boost is considered standard of care for treatment of locally advanced cervical cancer. Post treatment surveillance fluorodeoxyglucose positron emission tomography/computed tomography (FDG-PET/CT) imaging is recommended 3-6 months after completion of therapy. Persistent FDG avidity is commonly observed at the cervix on surveillance scans, indeterminate for residual malignancy versus post treatment inflammatory change. To better understand the clinical significance of residual hypermetabolic activity, we performed an analysis of surveillance FDG-PET/CT images, correlating findings with post treatment cervical biopsy results after completion of therapy. MATERIALS/METHODS The medical records of all patients treated with definitive chemotherapy and radiation for locally advanced (FIGO IB3 to IVA) cervical cancer at a single academic medical center between 2017 and 2022 were reviewed. Patients were treated with curative intent using a combination of pelvic external beam radiation with concurrent cisplatin chemotherapy followed by intracavitary or combined intracavitary/interstitial brachytherapy boost. Patients underwent FDG-PET/CT imaging at 3-6 months upon completion of therapy, followed by biopsy either for suspected residual disease or equivocal findings on physical exam or FDG-PET/CT scans. Biopsies were obtained within 100 days of FDG-PET/CT imaging (median, 14 days). RESULTS Twenty-three patients met inclusion criteria. One patient was excluded from analysis due to lack of FDG avidity on her pre-treatment FDG-PET/CT. Among the 22 evaluable scans, median pre-treatment FDG- PET/CT SUVmax of the cervix was 16.3 (range, 4.9-55). Median post-treatment SUVmax was 4.4 (range, 2.1-7.4). Median change in SUVmax from pre-treatment to post-treatment was 11.8 (range, 1.1 to 50.6). Twenty patients had a post-treatment SUVmax of greater than 3. Among post treatment scans, eight showed no residual uptake; two showed uptakes equal to the liver; eleven showed uptakes moderately higher than liver; and one showed uptake markedly increased relative to liver. None of the biopsy specimens showed evidence of residual malignancy, instead showing fibroinflammatory necrosis and reactive changes. None of the patients developed clinical evidence of disease progression at the cervix within one year of treatment completion. CONCLUSION Residual hypermetabolic activity at the cervix is common following definitive chemotherapy and radiation for cervical cancer. This is unlikely to represent residual viable malignancy. Post treatment FDG-PET/CT imaging remains valuable for detecting locoregional or distant disease progression/persistence following therapy.
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Affiliation(s)
- M K Hoang
- Department of Radiation Oncology, University of Kansas Medical Center, Kansas City, KS
| | - J Donald
- Department of Radiology, University of Kansas Medical Center, Kansas City, KS
| | - A Hoover
- Department of Radiation Oncology, University of Kansas Medical Center, Kansas City, KS
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Gadam RK, Lominska CE, Hoover A. Relationship of Sarcopenia to Tolerance of Chemotherapy During Definitive Treatment of Primary Anal Squamous Cell Carcinoma. Int J Radiat Oncol Biol Phys 2023; 117:e297. [PMID: 37785089 DOI: 10.1016/j.ijrobp.2023.06.2308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) Primary therapy for anal squamous cell carcinoma consists of definitive radiation with concurrent chemotherapy, most commonly 5-fluorouracil and mitomycin-C. This regimen is associated with significant cutaneous, hematologic, and gastrointestinal toxicity. Sarcopenia, or low skeletal muscle mass, has been described as an adverse prognostic factor and predictor of poor tolerance to therapy across a range of malignancies, including breast, gynecologic and head and neck cancers. Here, we sought to determine if the presence of sarcopenia at the initiation of therapy is associated with increased rates of toxicity and poorer tolerance of definitive treatment for primary anal squamous cell carcinoma. MATERIALS/METHODS This was a review of patients treated with curative intent for anal squamous cell carcinoma at a single academic medical center between 2007 and 2017, median follow up was 38 months. Analysis was limited to patients receiving definitive radiation with concurrent chemotherapy. Sarcopenia was objectively defined, using previously validated methods, as a skeletal muscle index (SMI) <41 cm2/m2 for female patients regardless of body mass index (BMI); for male patients sarcopenia was defined as SMI<43cm2/m2 for BMI<25 and <53 cm2/m2 for BMI >25. SMI calculations were performed using the average skeletal muscle cross sectional areas of two sequential axial CT slices at the L3 vertebral level obtained from radiation planning computed tomography scans. The image analysis was performed by a single trained observer using Sliceomatic software with a Hounsfield unit threshold of -29 to 150 to define skeletal muscle. Sarcopenia as a predictor for treatment toxicity was analyzed using Chi-Square testing. Overall survival and progression free survival were compared with 2-sample t tests. RESULTS Sixty-one patients were included in the analysis with 49% meeting criteria for sarcopenia. Stage did not differ although sarcopenic patients were significantly more elderly than those without sarcopenia (mean 72 vs 58 years, p<0.001). Patients with sarcopenia were significantly more likely to have chemotherapy breaks, chemotherapy dose reductions, and incomplete chemotherapy courses compared to non-sarcopenic patients (33.3% vs 9.7%; p = 0.02). Sarcopenia was not predictive of more radiation treatment breaks, hematologic toxicity, progression free survival or overall survival. CONCLUSION Sarcopenia is predictive of reduced tolerance to chemotherapy among patients receiving definitive combined modality therapy for primary anal carcinoma. We found no association between sarcopenia and tolerance of radiation therapy or survival outcomes.
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Affiliation(s)
- R K Gadam
- Department Of Radiation Oncology, University of Kansas Medical Center, Kansas City, KS
| | - C E Lominska
- Department of Radiation Oncology, University of Kansas School of Medicine, Kansas City, KS
| | - A Hoover
- Department of Radiation Oncology, University of Kansas Medical Center, Kansas City, KS
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Jurdi NE, Hoover A, O'Leary D, Cao Q, Gupta A, Ebens C, Maakaron JE, Betts BC, Rashidi A, Juckett MB, Lund T, Bachanova V, MacMillan ML, Miller JS, Orchard PJ, Wagner JE, Vercellotti G, Weisdorf DJ, Dusenbery K, Terezakis S, Holtan SG. Phase II Study of Myeloablative 7-8/8-Matched Allotransplantation with Post-Transplantation Cyclophosphamide, Tacrolimus, and Mycophenolate Mofetil. Transplant Cell Ther 2023; 29:576.e1-576.e5. [PMID: 37311510 PMCID: PMC10530433 DOI: 10.1016/j.jtct.2023.06.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2023] [Revised: 06/05/2023] [Accepted: 06/06/2023] [Indexed: 06/15/2023]
Abstract
Graft-versus-host disease (GVHD) is the major toxicity of allogeneic hematopoietic cell transplantation (HCT). We hypothesized that a GVHD prophylaxis regimen of post-transplantation cyclophosphamide (PTCy), tacrolimus (Tac), and mycophenolate mofetil (MMF) would be associated with incidences of acute and chronic GVHD in patients receiving a matched or single antigen mismatched HCT. This Phase II study was conducted at the University of Minnesota using a myeloablative regimen of either total body irradiation (TBI) at a total dose of 1320 cGy, administered in 165-cGy fractions, twice daily from day -4 to day -1, or busulfan (Bu) 3.2 mg/kg daily (cumulative area under the curve, 19,000 to 21,000 μmol/min/L) plus fludarabine (Flu) 40 mg/m2 once daily on days -5 to -2, followed by a GVHD prophylaxis regimen of PTCy 50 mg/kg on days +3 and +4, Tac, and MMF beginning on day +5. The primary endpoint was the cumulative incidence of chronic GVHD necessitating systemic immunosuppression (IST) at 1 year post-transplantation. Between March 2018 and May 2022, we enrolled 125 pediatric and adult patients, with a median follow-up of 813 days. The incidence of chronic GVHD necessitating systemic IST at 1 year was 5.5%. The rate of grade II-IV acute GVHD was 17.1%, and that of grade III-IV acute GVHD was 5.5%. Two-year overall survival was 73.7%, and 2-year graft-versus-host disease-free, relapse-free survival was 52.2%. The 2-year cumulative incidence of nonrelapse mortality was 10.2%, and the rate of relapse was 39.1%. There was no statistically significant difference in survival outcomes between recipients of matched donor transplants versus recipients of 7/8 matched donor transplants. Our data show that myeloablative HCT with PTCy/Tac/MMF results in an extremely low incidence of severe acute and chronic GVHD in well-matched allogeneic HCT.
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Affiliation(s)
- Najla El Jurdi
- Division of Hematology, Oncology and Transplantation, University of Minnesota, Minneapolis, Minnesota
| | - Alex Hoover
- Division of Pediatric Hematology/Oncology, University of Minnesota, Minneapolis, Minnesota
| | - Daniel O'Leary
- Division of Hematology, Oncology and Transplantation, University of Minnesota, Minneapolis, Minnesota
| | - Qing Cao
- Biostatistics Core, Masonic Cancer Center, University of Minnesota, Minneapolis, Minnesota
| | - Ashish Gupta
- Division of Pediatric Blood and Marrow Transplant & Cellular Therapy, University of Minnesota, Minneapolis, Minnesota
| | - Christen Ebens
- Division of Pediatric Blood and Marrow Transplant & Cellular Therapy, University of Minnesota, Minneapolis, Minnesota
| | - Joseph E Maakaron
- Division of Hematology, Oncology and Transplantation, University of Minnesota, Minneapolis, Minnesota
| | - Brian C Betts
- Division of Hematology, Oncology and Transplantation, University of Minnesota, Minneapolis, Minnesota
| | - Armin Rashidi
- Division of Hematology, Oncology and Transplantation, University of Minnesota, Minneapolis, Minnesota
| | - Mark B Juckett
- Division of Hematology, Oncology and Transplantation, University of Minnesota, Minneapolis, Minnesota
| | - Troy Lund
- Division of Pediatric Blood and Marrow Transplant & Cellular Therapy, University of Minnesota, Minneapolis, Minnesota
| | - Veronika Bachanova
- Division of Hematology, Oncology and Transplantation, University of Minnesota, Minneapolis, Minnesota
| | - Margaret L MacMillan
- Division of Pediatric Blood and Marrow Transplant & Cellular Therapy, University of Minnesota, Minneapolis, Minnesota
| | - Jeffrey S Miller
- Division of Hematology, Oncology and Transplantation, University of Minnesota, Minneapolis, Minnesota
| | - Paul J Orchard
- Division of Pediatric Blood and Marrow Transplant & Cellular Therapy, University of Minnesota, Minneapolis, Minnesota
| | - John E Wagner
- Division of Pediatric Blood and Marrow Transplant & Cellular Therapy, University of Minnesota, Minneapolis, Minnesota
| | - Gregory Vercellotti
- Division of Hematology, Oncology and Transplantation, University of Minnesota, Minneapolis, Minnesota
| | - Daniel J Weisdorf
- Division of Hematology, Oncology and Transplantation, University of Minnesota, Minneapolis, Minnesota
| | - Kathryn Dusenbery
- Department of Radiation Oncology, University of Minnesota, Minneapolis, Minnesota
| | - Stephanie Terezakis
- Department of Radiation Oncology, University of Minnesota, Minneapolis, Minnesota
| | - Shernan G Holtan
- Division of Hematology, Oncology and Transplantation, University of Minnesota, Minneapolis, Minnesota.
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El Jurdi N, Hoover A, O'Leary D, Cao Q, Gupta A, Ebens C, Maakaron J, Betts BC, Rashidi A, Juckett M, Lund T, Bachanova V, MacMillan M, Miller J, Orchard P, Wagner J, Vercellotti G, Weisdorf D, Dusenbery K, Terezakis S, Holtan S. Phase II Study of Myeloablative 8/8- or 7/8-Matched Allotransplantation with Post-Transplant Cyclophosphamide, Tacrolimus, and Mycophenolate Mofetil: Marked Reduction in GVHD Risk Without Increased Relapse Risk Compared to Historical Cyclosporine/Methotrexate. medRxiv 2023:2023.03.24.23287521. [PMID: 37034603 PMCID: PMC10081397 DOI: 10.1101/2023.03.24.23287521] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 04/22/2023]
Abstract
Introduction Graft-versus host disease (GVHD) is a major limitation to the success of allogeneic hematopoietic cell transplant (HCT). We hypothesized that the GVHD prophylaxis regimen of post-transplant cyclophosphamide (PTCy), tacrolimus (Tac) and mycophenolate mofetil (MMF) would reduce the incidence of GVHD in patients receiving a matched or single antigen mismatched HCT without an increase in risk of malignant relapse. Methods This is a phase II study conducted at the University of Minnesota using a myeloablative regimen of either: (A) total body irradiation (TBI, total dose 1320 cGy, administered in 165 cGy fractions, twice a day from days -4 to -1) or (B) Busulfan 3.2mg/kg daily (cumulative AUC 19,000 - 21,000 μmol/min/L) plus fludarabine 160mg/m2 days -5 to -2, followed by a GVHD prophylaxis regimen of PTCy (50mg/kg days +3 and +4), Tac and MMF (beginning day +5). The primary endpoint is cumulative incidence of chronic GVHD requiring systemic immunosuppression at 1-year post-transplant. We compared results to our previous myeloablative protocol for matched donors utilizing cyclosporine/methotrexate (CSA/MTX) GVHD prophylaxis. Results From March 2018 - June 2022, we enrolled and treated 125 pediatric and adult patients with a median follow up of 472 days. Grade II-IV acute GVHD occurred in 16% (95% confidence interval (CI): 9-23%); Grade III-IV acute GVHD was 4% (CI: 0-8%). No patients experienced grade IV GVHD, and there were no deaths due to GVHD before day 100. Only 3 developed chronic GVHD requiring immune suppression, (4%, CI: 0-8%). Two-year overall survival (OS) was 80% (CI: 69-87%), and (graft-versus-host disease-free, relapse-free survival) GRFS 57% (CI: 45-67%), both higher than historical CSA/MTX. The incidence of grade II-IV aGVHD, cGVHD, and NRM were all lower with PTCy/Tac/MMF compared to historical CSA/MTX. One-quarter (25%) experienced relapse (CI: 15-36%) similar to historical CSA/MTX. There was no statistically significant difference in survival outcomes between recipients of matched versus 7/8 donors. Conclusion Myeloablative HCT with PTCy/Tac/MMF results in extremely low incidence of severe acute or chronic GVHD, the primary endpoint of this clinical trial. Relapse risk is not increased compared to our historical CSA/MTX cohort.
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Affiliation(s)
- Najla El Jurdi
- Division of Hematology, Oncology and Transplantation, University of Minnesota, Minneapolis, MN
| | - Alex Hoover
- Division of Pediatric Hematology/Oncology, University of Minnesota, Minneapolis, MN, USA
| | - Daniel O'Leary
- Division of Hematology, Oncology and Transplantation, University of Minnesota, Minneapolis, MN
| | - Qing Cao
- Biostatistics Core, Masonic Cancer Center, University of Minnesota, Minneapolis, MN
| | - Ashish Gupta
- Division of Pediatric Blood and Marrow Transplant & Cellular Therapy, University of Minnesota, Minneapolis, MN, USA
| | - Christen Ebens
- Division of Pediatric Blood and Marrow Transplant & Cellular Therapy, University of Minnesota, Minneapolis, MN, USA
| | - Joseph Maakaron
- Division of Hematology, Oncology and Transplantation, University of Minnesota, Minneapolis, MN
| | - Brian C Betts
- Division of Hematology, Oncology and Transplantation, University of Minnesota, Minneapolis, MN
| | - Armin Rashidi
- Division of Hematology, Oncology and Transplantation, University of Minnesota, Minneapolis, MN
| | - Mark Juckett
- Division of Hematology, Oncology and Transplantation, University of Minnesota, Minneapolis, MN
| | - Troy Lund
- Division of Pediatric Blood and Marrow Transplant & Cellular Therapy, University of Minnesota, Minneapolis, MN, USA
| | - Veronika Bachanova
- Division of Hematology, Oncology and Transplantation, University of Minnesota, Minneapolis, MN
| | - Margaret MacMillan
- Division of Pediatric Blood and Marrow Transplant & Cellular Therapy, University of Minnesota, Minneapolis, MN, USA
| | - Jeffrey Miller
- Division of Hematology, Oncology and Transplantation, University of Minnesota, Minneapolis, MN
| | - Paul Orchard
- Division of Pediatric Blood and Marrow Transplant & Cellular Therapy, University of Minnesota, Minneapolis, MN, USA
| | - John Wagner
- Division of Pediatric Blood and Marrow Transplant & Cellular Therapy, University of Minnesota, Minneapolis, MN, USA
| | - Gregory Vercellotti
- Division of Hematology, Oncology and Transplantation, University of Minnesota, Minneapolis, MN
| | - Daniel Weisdorf
- Division of Hematology, Oncology and Transplantation, University of Minnesota, Minneapolis, MN
| | - Kathryn Dusenbery
- Department of Radiation Oncology, University of Minnesota, Minneapolis, MN
| | | | - Shernan Holtan
- Division of Hematology, Oncology and Transplantation, University of Minnesota, Minneapolis, MN
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Gilchrist L, Tanner L, Watson D, Hoover A, Messinger Y, Turcotte L. Utilization and Cost of Outpatient Rehabilitation Services for Pediatric Patients Treated for Acute Lymphoblastic Leukemia. Arch Phys Med Rehabil 2023. [DOI: 10.1016/j.apmr.2022.12.179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
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Zhang J, Zheng Y, Lee J, Hoover A, King SA, Chen L, Zhao J, Lin Q, Yu C, Zhu L, Wu X. Continuous Glucose Monitoring Enabled by Fluorescent Nanodiamond Boronic Hydrogel. Adv Sci (Weinh) 2023; 10:e2203943. [PMID: 36646501 PMCID: PMC9982560 DOI: 10.1002/advs.202203943] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Revised: 12/16/2022] [Indexed: 06/17/2023]
Abstract
Continuous monitoring of glucose allows diabetic patients to better maintain blood glucose level by altering insulin dosage or diet according to prevailing glucose values and thus to prevent potential hyperglycemia and hypoglycemia. However, current continuous glucose monitoring (CGM) relies mostly on enzyme electrodes or micro-dialysis probes, which suffer from insufficient stability, susceptibility to corrosion of electrodes, weak or inconsistent correlation, and inevitable interference. A fluorescence-based glucose sensor in the skin will likely be more stable, have improved sensitivity, and can resolve the issues of electrochemical interference from the tissue. This study develops a fluorescent nanodiamond boronic hydrogel system in porous microneedles for CGM. Fluorescent nanodiamond is one of the most photostable fluorophores with superior biocompatibility. When surface functionalized, the fluorescent nanodiamond can integrate with boronic polymer and form a hydrogel, which can produce fluorescent signals in response to environmental glucose concentration. In this proof-of-concept study, the strategy for building a miniatured device with fluorescent nanodiamond hydrogel is developed. The device demonstrates remarkable long-term photo and signal stability in vivo with both small and large animal models. This study presents a new strategy of fluorescence based CGM toward treatment and control of diabetes.
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Affiliation(s)
- Jian Zhang
- Ben May Department for Cancer ResearchUniversity of ChicagoChicagoILUSA
| | - Yongjun Zheng
- Key laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular EngineeringFeringa Nobel Prize Scientist Joint Research CenterSchool of Chemistry and Molecular EngineeringEast China University of Science and TechnologyShanghai200237China
- Burns Center of Changhai HospitalShanghaiChina
| | - Jimmy Lee
- Ben May Department for Cancer ResearchUniversity of ChicagoChicagoILUSA
| | - Alex Hoover
- Ben May Department for Cancer ResearchUniversity of ChicagoChicagoILUSA
| | - Sarah Ann King
- Ben May Department for Cancer ResearchUniversity of ChicagoChicagoILUSA
| | - Lifeng Chen
- Pritzker School of Molecular EngineeringUniversity of ChicagoILUSA
| | - Jing Zhao
- Ben May Department for Cancer ResearchUniversity of ChicagoChicagoILUSA
| | - Qiuning Lin
- School of Biomedical Engineering Shanghai Jiao Tong University800 Dong Chuan RoadShanghai200240China
| | - Cunjiang Yu
- Departments of Engineering Science and Mechanics, Biomedical Engineering, Materials Science and EngineeringMaterials Research InstitutePennsylvania State UniversityUniversity ParkPA16802USA
| | - Linyong Zhu
- Key laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular EngineeringFeringa Nobel Prize Scientist Joint Research CenterSchool of Chemistry and Molecular EngineeringEast China University of Science and TechnologyShanghai200237China
- Pritzker School of Molecular EngineeringUniversity of ChicagoILUSA
| | - Xiaoyang Wu
- Ben May Department for Cancer ResearchUniversity of ChicagoChicagoILUSA
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Summers C, Bhatt NS, Jenssen K, Hoover A, Ebens CL, Schaefer E, Cairo MS, Carpenter PA, Dahlberg A, Hadland B, Bleakley M, Thakar MS. Revisiting Pre-Transplant Testicular Radiation for Relapse Prophylaxis in Allogeneic Hematopoietic Cell Transplantation (HCT) for Acute Lymphoblastic Leukemia (ALL). Transplant Cell Ther 2023. [DOI: 10.1016/s2666-6367(23)00625-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Bhatt NS, Summers C, Jenssen K, Hoover A, Ebens CL, Schaefer E, Cairo MS, Carpenter PA, Dahlberg A, Hadland B, Bleakley M, Thakar MS. Revisiting the Role of Post-Transplant Central Nervous System Prophylaxis in Allogeneic Hematopoietic Cell Transplantation for Acute Lymphoblastic Leukemia. Transplant Cell Ther 2023. [DOI: 10.1016/s2666-6367(23)00627-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Turcotte LM, Watson D, Tanner L, Hoover A, Gilchrist L, Finch M, Messinger YH. Real-World Cost of Pediatric Acute Lymphoblastic Leukemia Care Among Commercially Insured Individuals in the United States: Effect of Era and Age at Diagnosis. JCO Oncol Pract 2022; 18:e1750-e1761. [PMID: 36166724 PMCID: PMC9653200 DOI: 10.1200/op.22.00344] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Revised: 07/21/2022] [Accepted: 08/15/2022] [Indexed: 01/05/2023] Open
Abstract
PURPOSE Acute lymphoblastic leukemia (ALL) is the most common pediatric malignancy. Five-year survival is approaching 90%. In efforts to further improve outcomes, it is critical to consider the cost of ALL care. MATERIALS AND METHODS Commercial insurance data from OptumLabs Data Warehouse were used to identify patients with ALL, age 1-30 years, diagnosed in 1993-2017 in the United States, with 36 months of continuous insurance coverage. Patients treated with hematopoietic cell transplantation were excluded. Inpatient and outpatient utilization and cumulative reimbursements (inflation-adjusted to December 2020) were computed 8 and 36 months from diagnosis and stratified by age (1-9, 10-12, and ≥ 13 years) as proxies for National Cancer Institute risk groups. Regression models were constructed to assess associations with demographic and clinical characteristics. RESULTS Among 927 patients (median age, 6 years; interquartile range, 3-12 years; 43% female), individuals age ≥ 10 years had 23-25 more inpatient days and 22 more outpatient encounters compared with younger patients. The 36-month median cost was $394,000 (USD) (interquartile range, $256,000-$695,000 [USD]), and 64% of the total cost was incurred during the initial 8 months. The 36-month cost was 1.5-fold higher for those age 10-12 years and 1.7-fold higher for those age ≥ 13 years compared with 1-9 years. The cost for those diagnosed in 2013-2017 was 70% higher compared with 1993-2002, and was not different on the basis of sex, race, or ethnicity. CONCLUSION Older age was associated with higher utilization and cost, and the cost of treatment increased significantly over time. These data provide valuable benchmarks for future studies examining the cost-benefit of ALL therapy modifications.
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Affiliation(s)
| | | | | | - Alex Hoover
- University of Minnesota Medical School, Minneapolis, MN
| | - Laura Gilchrist
- Children's Minnesota, Minneapolis, MN
- St Catherine University, St Paul, MN
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Nganga D, Hoover A. Visceral Adipose Volume as a Predictor for Acute Bowel Toxicity in Patients Receiving Adjuvant Intensity-Modulated Radiation Therapy for Cervical or Endometrial Cancer. Int J Radiat Oncol Biol Phys 2021. [DOI: 10.1016/j.ijrobp.2021.07.1677] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Hoover A, Zimmerman JA, Wiese S, Modi A. Evaluation of Empiric Vancomycin for Fevers During High-dose Cytarabine Administration. J Pediatr Hematol Oncol 2021; 43:e1010-e1014. [PMID: 33560084 PMCID: PMC8329102 DOI: 10.1097/mph.0000000000002073] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Accepted: 12/14/2020] [Indexed: 11/26/2022]
Abstract
BACKGROUND Cytarabine is a nucleoside analog used in chemotherapy regimens for the treatment of multiple hematologic malignancies. One of the known adverse effects of cytarabine, particularly in patients receiving high-dose cytarabine (HDAC), is drug-induced fever. Multiple studies have demonstrated an increased risk of viridans group streptococcal bacteremia in patients who have received HDAC. For this reason, our institution and several other institutions across the country routinely include vancomycin as empiric coverage for patients who develop fever during HDAC, due to concern for resistance to cephalosporin monotherapy. MATERIALS AND METHODS Patient demographic, diagnosis, treatment, and outcome information was collected by electronic chart review for each HDAC infusion from 2007 to August 2018 at the University of Iowa Stead Family Children's Hospital. If fever was documented during or within 24 hours of HDAC, additional information was collected regarding patient outcome and diagnostic testing. RESULTS Of 208 HDAC administrations documented, patients developed fevers during the course on 82 occasions (39.4%). A median of 3 blood cultures per febrile period were obtained from time of fever onset during HDAC administration through >24 hours afebrile. One blood culture was positive for an oral flora organism determined by the microbiology lab report to be a likely contaminant. There were no other positive blood cultures in non-neutropenic or neutropenic patients. CONCLUSION Fever due to HDAC is relatively common but appears to frequently lack association with bacteremia during the time of HDAC administration. Broad-spectrum empiric antibiotic regimens including vancomycin may be unnecessary for these patients, particularly before they become neutropenic.
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MESH Headings
- Adolescent
- Adult
- Anti-Bacterial Agents/therapeutic use
- Antimetabolites, Antineoplastic/administration & dosage
- Antimetabolites, Antineoplastic/adverse effects
- Bacteremia/chemically induced
- Bacteremia/drug therapy
- Bacteremia/microbiology
- Bacteremia/pathology
- Burkitt Lymphoma/drug therapy
- Burkitt Lymphoma/pathology
- Child
- Child, Preschool
- Cytarabine/administration & dosage
- Cytarabine/adverse effects
- Female
- Fever/chemically induced
- Fever/drug therapy
- Fever/microbiology
- Fever/pathology
- Follow-Up Studies
- Humans
- Infant
- Infant, Newborn
- Leukemia, Myeloid, Acute/drug therapy
- Leukemia, Myeloid, Acute/pathology
- Lymphoma, Large B-Cell, Diffuse/drug therapy
- Lymphoma, Large B-Cell, Diffuse/pathology
- Male
- Prognosis
- Retrospective Studies
- Vancomycin/therapeutic use
- Young Adult
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Affiliation(s)
- Alex Hoover
- Stead Family Department of Pediatrics, University of Iowa Stead Family Children’s Hospital, Iowa City, IA
| | - Jessica A.O. Zimmerman
- Division of Pediatric Hematology/Oncology, University of Iowa Stead Family Children’s Hospital, Iowa City, IA
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Soultan D, Bragg M, Thompson T, Hoover A. PO-1708 In-House Incident Learning System for FMEA Using Microsoft Sharepoints and Powerapps. Radiother Oncol 2021. [DOI: 10.1016/s0167-8140(21)08159-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Hoover A, Fustino N, Sparks AO, Rokes C. Sweating Blood: A Case Series of 2 Siblings With Hematohidrosis. J Pediatr Hematol Oncol 2021; 43:70-72. [PMID: 31743319 DOI: 10.1097/mph.0000000000001661] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/23/2019] [Accepted: 10/13/2019] [Indexed: 01/20/2023]
Abstract
Hematohidrosis is a condition that presents with the excretion of blood from intact skin. Reported cases suggest emotional stress reactions as the most common inciting events. The pathogenesis of the condition is not well understood. We describe a 9-year old boy and his 6-month old half-sister with a history of bleeding episodes from the ears, eyes, and scalp, as well as other sites. Symptoms in both children have shown a positive response to propranolol, with decreased frequency and severity of bleeding. There are no prior reports of siblings with hematohidrosis, suggesting a possible genetic predisposition.
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Affiliation(s)
- Alex Hoover
- University of Iowa Stead Family Children's Hospital, Iowa City
| | - Nicholas Fustino
- Pediatric Cancer and Blood Disorders Center, Blank Children's Hospital, Des Moines, IA
| | | | - Christopher Rokes
- Pediatric Cancer and Blood Disorders Center, Blank Children's Hospital, Des Moines, IA
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Hoover A, Sato M. LGG-24. CARBOPLATIN-INDUCED HEMATURIA IN A PEDIATRIC PATIENT WITH LOW-GRADE GLIOMA AND REVIEW OF LITERATURE. Neuro Oncol 2020. [PMCID: PMC7715079 DOI: 10.1093/neuonc/noaa222.406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
OBJECTIVE In this case report, we present a pediatric patient with gross hematuria and hydroureteronephrosis associated with high dose carboplatin. Given the paucity of literature on the subject, we also conduct and present a review of cases. CASE PRESENTATION: A 6-year-old Caucasian female with history of Type 1 neurofibromatosis was undergoing treatment for a low-grade glioma with monthly high dose carboplatin (560 mg/m2). After 8th dose out of 13, the patient developed severe nausea and vomiting and was admitted for dehydration. She was noted to have microscopic hematuria. After 9th dose, the patient again developed severe nausea, vomiting and gross hematuria with clots. She was admitted and treated with IV hydration. Renal ultrasound showed newly developed bilateral hydroureteronephrosis. Coagulation studies were normal. Multiple cultures and viral studies were negative. Hematuria cleared spontaneously after 4 days of aggressive hydration. RESULTS Subsequent carboplatin was given with aggressive hydration and minimized nausea/vomiting and no hematuria was observed. Literature review revealed only 4 reported cases of carboplatin-induced hematuria, including only one pediatric case that occurred in a patient with concurrent thrombocytopenia. Carboplatin may exhibit toxicity to the transitional epithelial cells of the urogenital tract causing hemorrhage from the renal pelvis and ureters. If untreated, this may lead to urinary outflow obstruction and subsequent obstructive nephropathy. CONCLUSION We present a rare toxicity, gross hematuria caused by high-dose carboplatin treatment. Providers should be aware of this rare toxicity and provide timely hydration and supportive care to prevent development of obstructive kidney injury and/or renal failure.
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Bodine T, Soultan D, Badkul R, Hoover A. Dosimetric Modeling of Intracavitary versus Combined Intracavitary/Interstitial Applicators During High Dose Rate Brachytherapy for Cervical Cancer. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.2614] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Grachtchouk M, Wilbert D, Hoover A, Pyrozhenko D, Verhaegen M, Dlugosz A. LB919 Aging does not facilitate nodular BCC development in mice expressing oncogenic Smo. J Invest Dermatol 2020. [DOI: 10.1016/j.jid.2020.05.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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D'Rummo K, Lominska C, Tennapel M, Hoover A. Routine Pathologic Assessment of Local Response to Definitive Chemoradiation for Localized Anal Cancer: An Institutional Report. Int J Radiat Oncol Biol Phys 2019. [DOI: 10.1016/j.ijrobp.2019.06.2136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Ganju R, Morse R, Tennapel M, Hoover A, Kakarala K, Shnayder L, Bur A, Lominska C. Skeletal Muscle Gauge Measured at the C3 Vertebral Body Predicts for Outcomes in Men with P16-Positive Oropharynx Cancer. Int J Radiat Oncol Biol Phys 2019. [DOI: 10.1016/j.ijrobp.2019.06.1528] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Ganju R, Tennapel M, Chen A, Hoover A. Visceral Adipose Ratio as a Novel Predictor for Acute Bowel Toxicity in Patients Receiving Pelvic Radiation. Int J Radiat Oncol Biol Phys 2018. [DOI: 10.1016/j.ijrobp.2018.07.403] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Hoover A, Tejwani A, Tennapel M, Smith M, Chen A. Variable Impact of Bowel Space Contouring Technique on Radiation Dose and Volume Assessments in Treatment Planning for Gynecologic Cancers. Int J Radiat Oncol Biol Phys 2018. [DOI: 10.1016/j.ijrobp.2018.07.1762] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Ganju R, Morse R, Tennapel M, Hoover A, Chen A, Lominska C. The Impact of Low Skeletal Muscle Mass and Density on Patients with Head and Neck Cancer Receiving Concurrent Chemoradiation. Int J Radiat Oncol Biol Phys 2018. [DOI: 10.1016/j.ijrobp.2018.07.760] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Bhanja P, Norris A, Nag D, Choudhury S, Hoover A, Saha S. BCN057 Mitigates Radiation Induced Gastrointestinal Syndrome. Int J Radiat Oncol Biol Phys 2017. [DOI: 10.1016/j.ijrobp.2017.06.498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Yuan T, Watkins J, Mott S, Marquardt M, Hoover A, Sun W, Buatti J, Pagedar N, Anderson C. Does Routine Surveillance PET/CT at 3 Months Have Value After Laryngectomy (L) Followed by Radiation therapy (RT) for Locoregionally Advanced Laryngeal Cancer? Int J Radiat Oncol Biol Phys 2016. [DOI: 10.1016/j.ijrobp.2015.12.172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Anderson C, Marquardt M, Steen S, Hoover A, Button A, Karnell L, Wehbe A, Sun W, Funk G, Buatti J. Analysis of Pathologic Factors From Surgical Resection Influences Accuracy of 3 Month Post-Radiation Therapy FDG PET/CT in Resected Oral Cavity Cancer Patients. Int J Radiat Oncol Biol Phys 2013. [DOI: 10.1016/j.ijrobp.2013.06.503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Marquardt M, Anderson CM, Steen S, Hoover A, Karnell L, Funk G, Menda Y, Graham M, Buatti J. Accuracy of 3 Month Posttherapy FDG PET/CT in Resected Oral Cavity Cancer Patients Who Received Adjuvant Radiation. Pract Radiat Oncol 2013; 3:S24. [PMID: 24674525 DOI: 10.1016/j.prro.2013.01.085] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Affiliation(s)
| | | | - S Steen
- University of Iowa, Iowa City, IA
| | - A Hoover
- University of Iowa, Iowa City, IA
| | | | - G Funk
- University of Iowa, Iowa City, IA
| | - Y Menda
- University of Iowa, Iowa City, IA
| | - M Graham
- University of Iowa, Iowa City, IA
| | - J Buatti
- University of Iowa, Iowa City, IA
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Anderson C, Steen S, Hoover A, Karnell L, Funk G, Menda Y, Graham M, Buatti J. Accuracy of F-18 Fluorodeoxyglucose PET/CT 3 Months After Completion of Radiation Therapy for Head-and-Neck Squamous Cancer. Int J Radiat Oncol Biol Phys 2012. [DOI: 10.1016/j.ijrobp.2012.07.1399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Hoover A, Steen S, Karnell L, Funk G, Menda Y, Graham M, Buatti J, Anderson C. Diagnostic Value of 3-month F-18 Fluorodeoxyglucose PET/CT Among Head-and-Neck Cancer Patients With and Without Gross Disease at Initiation of Radiation Therapy. Int J Radiat Oncol Biol Phys 2012. [DOI: 10.1016/j.ijrobp.2012.07.1413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Hoover A, Harris L. Varying the visual perspective in which head and finger movement is seen affects cross-modal synchrony detection. J Vis 2012. [DOI: 10.1167/12.9.1315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Hoover A, Ceballos N, Komogortsev O, Graham R. Effects of hunger and body mass index on attentional capture by high and low calorie food images: An eye-tracking study. J Vis 2010. [DOI: 10.1167/10.7.256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Nowicki P, Hoover A, De Geest K, Goodheart M, Lace M, Haugen T, Turek L, Strand G, Bossler A, Klingelhutz A, Lee J. Protein tyrosine phosphatase nonreceptor 13 (PTPN13) is targeted by human papillomavirus 16 E6 in cervical epithelium. Infect Agent Cancer 2009. [PMCID: PMC4261802 DOI: 10.1186/1750-9378-4-s2-p31] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
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Abdo AA, Ackermann M, Arimoto M, Asano K, Atwood WB, Axelsson M, Baldini L, Ballet J, Band DL, Barbiellini G, Baring MG, Bastieri D, Battelino M, Baughman BM, Bechtol K, Bellardi F, Bellazzini R, Berenji B, Bhat PN, Bissaldi E, Blandford RD, Bloom ED, Bogaert G, Bogart JR, Bonamente E, Bonnell J, Borgland AW, Bouvier A, Bregeon J, Brez A, Briggs MS, Brigida M, Bruel P, Burnett TH, Burrows D, Busetto G, Caliandro GA, Cameron RA, Caraveo PA, Casandjian JM, Ceccanti M, Cecchi C, Celotti A, Charles E, Chekhtman A, Cheung CC, Chiang J, Ciprini S, Claus R, Cohen-Tanugi J, Cominsky LR, Connaughton V, Conrad J, Costamante L, Cutini S, DeKlotz M, Dermer CD, de Angelis A, de Palma F, Digel SW, Dingus BL, do Couto e Silva E, Drell PS, Dubois R, Dumora D, Edmonds Y, Evans PA, Fabiani D, Farnier C, Favuzzi C, Finke J, Fishman G, Focke WB, Frailis M, Fukazawa Y, Funk S, Fusco P, Gargano F, Gasparrini D, Gehrels N, Germani S, Giebels B, Giglietto N, Giommi P, Giordano F, Glanzman T, Godfrey G, Goldstein A, Granot J, Greiner J, Grenier IA, Grondin MH, Grove JE, Guillemot L, Guiriec S, Haller G, Hanabata Y, Harding AK, Hayashida M, Hays E, Hernando Morat JA, Hoover A, Hughes RE, Jóhannesson G, Johnson AS, Johnson RP, Johnson TJ, Johnson WN, Kamae T, Katagiri H, Kataoka J, Kavelaars A, Kawai N, Kelly H, Kennea J, Kerr M, Kippen RM, Knödlseder J, Kocevski D, Kocian ML, Komin N, Kouveliotou C, Kuehn F, Kuss M, Lande J, Landriu D, Larsson S, Latronico L, Lavalley C, Lee B, Lee SH, Lemoine-Goumard M, Lichti GG, Longo F, Loparco F, Lott B, Lovellette MN, Lubrano P, Madejski GM, Makeev A, Marangelli B, Mazziotta MN, McBreen S, McEnery JE, McGlynn S, Meegan C, Mészáros P, Meurer C, Michelson PF, Minuti M, Mirizzi N, Mitthumsiri W, Mizuno T, Moiseev AA, Monte C, Monzani ME, Moretti E, Morselli A, Moskalenko IV, Murgia S, Nakamori T, Nelson D, Nolan PL, Norris JP, Nuss E, Ohno M, Ohsugi T, Okumura A, Omodei N, Orlando E, Ormes JF, Ozaki M, Paciesas WS, Paneque D, Panetta JH, Parent D, Pelassa V, Pepe M, Perri M, Pesce-Rollins M, Petrosian V, Pinchera M, Piron F, Porter TA, Preece R, Rainò S, Ramirez-Ruiz E, Rando R, Rapposelli E, Razzano M, Razzaque S, Rea N, Reimer A, Reimer O, Reposeur T, Reyes LC, Ritz S, Rochester LS, Rodriguez AY, Roth M, Ryde F, Sadrozinski HFW, Sanchez D, Sander A, Saz Parkinson PM, Scargle JD, Schalk TL, Segal KN, Sgrò C, Shimokawabe T, Siskind EJ, Smith DA, Smith PD, Spandre G, Spinelli P, Stamatikos M, Starck JL, Stecker FW, Steinle H, Stephens TE, Strickman MS, Suson DJ, Tagliaferri G, Tajima H, Takahashi H, Takahashi T, Tanaka T, Tenze A, Thayer JB, Thayer JG, Thompson DJ, Tibaldo L, Torres DF, Tosti G, Tramacere A, Turri M, Tuvi S, Usher TL, van der Horst AJ, Vigiani L, Vilchez N, Vitale V, von Kienlin A, Waite AP, Williams DA, Wilson-Hodge C, Winer BL, Wood KS, Wu XF, Yamazaki R, Ylinen T, Ziegler M. Fermi Observations of High-Energy Gamma-Ray Emission from GRB 080916C. Science 2009; 323:1688-93. [DOI: 10.1126/science.1169101] [Citation(s) in RCA: 478] [Impact Index Per Article: 31.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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Adare A, Adler SS, Afanasiev S, Aidala C, Ajitanand NN, Akiba Y, Al-Bataineh H, Alexander J, Al-Jamel A, Aoki K, Aphecetche L, Armendariz R, Aronson SH, Asai J, Atomssa ET, Averbeck R, Awes TC, Azmoun B, Babintsev V, Baksay G, Baksay L, Baldisseri A, Barish KN, Barnes PD, Bassalleck B, Bathe S, Batsouli S, Baublis V, Bauer F, Bazilevsky A, Belikov S, Bennett R, Berdnikov Y, Bickley AA, Bjorndal MT, Boissevain JG, Borel H, Boyle K, Brooks ML, Brown DS, Bruner N, Bucher D, Buesching H, Bumazhnov V, Bunce G, Burward-Hoy JM, Butsyk S, Camard X, Campbell S, Chai JS, Chand P, Chang BS, Chang WC, Charvet JL, Chernichenko S, Chiba J, Chi CY, Chiu M, Choi IJ, Choudhury RK, Chujo T, Chung P, Churyn A, Cianciolo V, Cleven CR, Cobigo Y, Cole BA, Comets MP, Constantin P, Csanád M, Csörgo T, Cussonneau JP, Dahms T, Das K, David G, Deák F, Deaton MB, Dehmelt K, Delagrange H, Denisov A, d'Enterria D, Deshpande A, Desmond EJ, Devismes A, Dietzsch O, Dion A, Donadelli M, Drachenberg JL, Drapier O, Drees A, Dubey AK, Durum A, Dutta D, Dzhordzhadze V, Efremenko YV, Egdemir J, Ellinghaus F, Emam WS, Enokizono A, En'yo H, Espagnon B, Esumi S, Eyser KO, Fields DE, Finck C, Finger M, Finger M, Fleuret F, Fokin SL, Forestier B, Fox BD, Fraenkel Z, Frantz JE, Franz A, Frawley AD, Fujiwara K, Fukao Y, Fung SY, Fusayasu T, Gadrat S, Garishvili I, Gastineau F, Germain M, Glenn A, Gong H, Gonin M, Gosset J, Goto Y, Granier de Cassagnac R, Grau N, Greene SV, Grosse Perdekamp M, Gunji T, Gustafsson HA, Hachiya T, Hadj Henni A, Haegemann C, Haggerty JS, Hagiwara MN, Hamagaki H, Han R, Hansen AG, Harada H, Hartouni EP, Haruna K, Harvey M, Haslum E, Hasuko K, Hayano R, Heffner M, Hemmick TK, Hester T, Heuser JM, He X, Hidas P, Hiejima H, Hill JC, Hobbs R, Hohlmann M, Holmes M, Holzmann W, Homma K, Hong B, Hoover A, Horaguchi T, Hornback D, Hur MG, Ichihara T, Ikonnikov VV, Imai K, Inaba M, Inoue Y, Inuzuka M, Isenhower D, Isenhower L, Ishihara M, Isobe T, Issah M, Isupov A, Jacak BV, Jia J, Jin J, Jinnouchi O, Johnson BM, Johnson SC, Joo KS, Jouan D, Kajihara F, Kametani S, Kamihara N, Kamin J, Kaneta M, Kang JH, Kanou H, Katou K, Kawabata T, Kawagishi T, Kawall D, Kazantsev AV, Kelly S, Khachaturov B, Khanzadeev A, Kikuchi J, Kim DH, Kim DJ, Kim E, Kim GB, Kim HJ, Kim YS, Kinney E, Kiss A, Kistenev E, Kiyomichi A, Klay J, Klein-Boesing C, Kobayashi H, Kochenda L, Kochetkov V, Kohara R, Komkov B, Konno M, Kotchetkov D, Kozlov A, Král A, Kravitz A, Kroon PJ, Kubart J, Kuberg CH, Kunde GJ, Kurihara N, Kurita K, Kweon MJ, Kwon Y, Kyle GS, Lacey R, Lai YS, Lajoie JG, Lebedev A, Le Bornec Y, Leckey S, Lee DM, Lee MK, Lee T, Leitch MJ, Leite MAL, Lenzi B, Lim H, Liska T, Litvinenko A, Liu MX, Li X, Li XH, Love B, Lynch D, Maguire CF, Makdisi YI, Malakhov A, Malik MD, Manko VI, Mao Y, Martinez G, Masek L, Masui H, Matathias F, Matsumoto T, McCain MC, McCumber M, McGaughey PL, Miake Y, Mikes P, Miki K, Miller TE, Milov A, Mioduszewski S, Mishra GC, Mishra M, Mitchell JT, Mitrovski M, Mohanty AK, Morreale A, Morrison DP, Moss JM, Moukhanova TV, Mukhopadhyay D, Muniruzzaman M, Murata J, Nagamiya S, Nagata Y, Nagle JL, Naglis M, Nakagawa I, Nakamiya Y, Nakamura T, Nakano K, Newby J, Nguyen M, Norman BE, Nyanin AS, Nystrand J, O'Brien E, Oda SX, Ogilvie CA, Ohnishi H, Ojha ID, Okada H, Okada K, Oka M, Omiwade OO, Oskarsson A, Otterlund I, Ouchida M, Oyama K, Ozawa K, Pak R, Pal D, Palounek APT, Pantuev V, Papavassiliou V, Park J, Park WJ, Pate SF, Pei H, Penev V, Peng JC, Pereira H, Peresedov V, Peressounko DY, Pierson A, Pinkenburg C, Pisani RP, Purschke ML, Purwar AK, Qualls JM, Qu H, Rak J, Rakotozafindrabe A, Ravinovich I, Read KF, Rembeczki S, Reuter M, Reygers K, Riabov V, Riabov Y, Roche G, Romana A, Rosati M, Rosendahl SSE, Rosnet P, Rukoyatkin P, Rykov VL, Ryu SS, Sahlmueller B, Saito N, Sakaguchi T, Sakai S, Sakata H, Samsonov V, Sanfratello L, Santo R, Sato HD, Sato S, Sawada S, Schutz Y, Seele J, Seidl R, Semenov V, Seto R, Sharma D, Shea TK, Shein I, Shevel A, Shibata TA, Shigaki K, Shimomura M, Shohjoh T, Shoji K, Sickles A, Silva CL, Silvermyr D, Silvestre C, Sim KS, Singh CP, Singh V, Skutnik S, Slunecka M, Smith WC, Soldatov A, Soltz RA, Sondheim WE, Sorensen SP, Sourikova IV, Staley F, Stankus PW, Stenlund E, Stepanov M, Ster A, Stoll SP, Sugitate T, Suire C, Sullivan JP, Sziklai J, Tabaru T, Takagi S, Takagui EM, Taketani A, Tanaka KH, Tanaka Y, Tanida K, Tannenbaum MJ, Taranenko A, Tarján P, Thomas TL, Togawa M, Toia A, Tojo J, Tomásek L, Torii H, Towell RS, Tram VN, Tserruya I, Tsuchimoto Y, Tuli SK, Tydesjö H, Tyurin N, Uam TJ, Vale C, Valle H, vanHecke HW, Velkovska J, Velkovsky M, Vertesi R, Veszprémi V, Vinogradov AA, Virius M, Volkov MA, Vrba V, Vznuzdaev E, Wagner M, Walker D, Wang XR, Watanabe Y, Wessels J, White SN, Willis N, Winter D, Wohn FK, Woody CL, Wysocki M, Xie W, Yamaguchi YL, Yanovich A, Yasin Z, Ying J, Yokkaichi S, Young GR, Younus I, Yushmanov IE, Zajc WA, Zaudtke O, Zhang C, Zhou S, Zimányi J, Zolin L, Zong X. System size and energy dependence of jet-induced hadron pair correlation shapes in Cu+Cu and Au+Au collisions at square root sNN=200 and 62.4 GeV. Phys Rev Lett 2007; 98:232302. [PMID: 17677902 DOI: 10.1103/physrevlett.98.232302] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2006] [Indexed: 05/16/2023]
Abstract
We present azimuthal angle correlations of intermediate transverse momentum (1-4 GeV/c) hadrons from dijets in Cu+Cu and Au+Au collisions at square root sNN=62.4 and 200 GeV. The away-side dijet induced azimuthal correlation is broadened, non-Gaussian, and peaked away from Delta phi=pi in central and semicentral collisions in all the systems. The broadening and peak location are found to depend upon the number of participants in the collision, but not on the collision energy or beam nuclei. These results are consistent with sound or shock wave models, but pose challenges to Cherenkov gluon radiation models.
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Affiliation(s)
- A Adare
- University of Colorado, Boulder, Colorado 80309, USA
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Adler SS, Afanasiev S, Aidala C, Ajitanand NN, Akiba Y, Alexander J, Amirikas R, Aphecetche L, Aronson SH, Averbeck R, Awes TC, Azmoun R, Babintsev V, Baldisseri A, Barish KN, Barnes PD, Bassalleck B, Bathe S, Batsouli S, Baublis V, Bazilevsky A, Belikov S, Berdnikov Y, Bhagavatula S, Boissevain JG, Borel H, Borenstein S, Brooks ML, Brown DS, Bruner N, Bucher D, Buesching H, Bumazhnov V, Bunce G, Burward-Hoy JM, Butsyk S, Camard X, Chai JS, Chand P, Chang WC, Chernichenko S, Chi CY, Chiba J, Chiu M, Choi IJ, Choi J, Choudhury RK, Chujo T, Chung P, Cianciolo V, Cobigo Y, Cole BA, Constantin P, Csanád M, Csörgo T, d'Enterria D, David G, Delagrange H, Denisov A, Deshpande A, Desmond EJ, Devismes A, Dietzsch O, Drapier O, Drees A, du Rietz R, Durum A, Dutta D, Efremenko YV, Chenawi KE, Enokizono A, En'yo H, Esumi S, Ewell L, Fields DE, Fleuret F, Fokin SL, Fox BD, Fraenkel Z, Frantz JE, Franz A, Frawley AD, Fung SY, Garpman S, Ghosh TK, Glenn A, Gogiberidze G, Gonin M, Gosset J, Goto Y, Granier de Cassagnac R, Grau N, Greene SV, Perdekamp MG, Guryn W, Gustafsson HA, Hachiya T, Haggerty JS, Hamagaki H, Hansen AG, Hartouni EP, Harvey M, Hayano R, Hayashi N, He X, Heffner M, Hemmick TK, Heuser JM, Hibino M, Hill JC, Holzmann W, Homma K, Hong B, Hoover A, Ichihara T, Ikonnikov VV, Imai K, Isenhower D, Ishihara M, Issah M, Isupov A, Jacak BV, Jang WY, Jeong Y, Jia J, Jinnouchi O, Johnson BM, Johnson SC, Joo KS, Jouan D, Kametani S, Kamihara N, Kang JH, Kapoor SS, Katou K, Kelly S, Khachaturov B, Khanzadeev A, Kikuchi J, Kim DH, Kim DJ, Kim DW, Kim E, Kim GB, Kim HJ, Kistenev E, Kiyomichi A, Kiyoyama K, Klein-Boesing C, Kobayashi H, Kochenda L, Kochetkov V, Koehler D, Kohama T, Kopytine M, Kotchetkov D, Kozlov A, Kroon PJ, Kuberg CH, Kurita K, Kuroki Y, Kweon MJ, Kwon Y, Kyle GS, Lacey R, Ladygin V, Lajoie JG, Lebedev A, Leckey S, Lee DM, Lee S, Leitch MJ, Li XH, Lim H, Litvinenko A, Liu MX, Liu Y, Maguire CF, Makdisi YI, Malakhov A, Manko VI, Mao Y, Martinez G, Marx MD, Masui H, Matathias F, Matsumoto T, McGaughey PL, Melnikov E, Messer F, Miake Y, Milan J, Miller TE, Milov A, Mioduszewski S, Mischke RE, Mishra GC, Mitchell JT, Mohanty AK, Morrison DP, Moss JM, Mühlbacher F, Mukhopadhyay D, Muniruzzaman M, Murata J, Nagamiya S, Nagle JL, Nagy M, Nakamura T, Nandi BK, Nara M, Newby J, Nilsson P, Nyanin AS, Nystrand J, O'Brien E, Ogilvie CA, Ohnishi H, Ojha ID, Okada K, Ono M, Onuchin V, Oskarsson A, Otterlund I, Oyama K, Ozawa K, Pal D, Palounek APT, Pantuev V, Papavassiliou V, Park J, Parmar A, Pate SF, Peitzmann T, Peng JC, Peresedov V, Pinkenburg C, Pisani RP, Plasil F, Purschke ML, Purwar AK, Rak J, Ravinovich I, Read KF, Reuter M, Reygers K, Riabov V, Riabov Y, Roche G, Romana A, Rosati M, Rosnet P, Ryu SS, Sadler ME, Saito N, Sakaguchi T, Sakai M, Sakai S, Samsonov V, Sanfratello L, Santo R, Sato HD, Sato S, Sawada S, Schutz Y, Semenov V, Seto R, Shaw MR, Shea TK, Shibata TA, Shigaki K, Shiina T, Silva CL, Silvermyr D, Sim KS, Singh CP, Singh V, Sivertz M, Soldatov A, Soltz RA, Sondheim WE, Sorensen SP, Sourikova IV, Staley F, Stankus PW, Stenlund E, Stepanov M, Ster A, Stoll SP, Sugitate T, Sullivan JP, Takagui EM, Taketani A, Tamai M, Tanaka KH, Tanaka Y, Tanida K, Tannenbaum MJ, Taranenko A, Tarján P, Tepe JD, Thomas TL, Tojo J, Torii H, Towell RS, Tserruya I, Tsuruoka H, Tuli SK, Tydesjö H, Tyurin N, van Hecke HW, Velkovska J, Velkovsky M, Veszprémi V, Villatte L, Vinogradov AA, Volkov MA, Vznuzdaev E, Wang XR, Watanabe Y, White SN, Wohn FK, Woody CL, Xie W, Yang Y, Yanovich A, Yokkaichi S, Young GR, Yushmanov IE, Zajc WA, Zhang C, Zhou S, Zhou SJ, Zolin L. Evidence for a long-range component in the pion emission source in Au+Au collisions at sqrt sNN=200 GeV. Phys Rev Lett 2007; 98:132301. [PMID: 17501193 DOI: 10.1103/physrevlett.98.132301] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2006] [Indexed: 05/15/2023]
Abstract
Emission source functions are extracted from correlation functions constructed from charged pions produced at midrapidity in Au+Au collisions at sqrt[s(NN)]=200 GeV. The source parameters extracted from these functions at low k(T) give first indications of a long tail for the pion emission source. The source extension cannot be explained solely by simple kinematic considerations. The possible role of a halo of secondary pions from resonance emissions is explored.
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Affiliation(s)
- S S Adler
- Brookhaven National Laboratory, Upton, New York 11973-5000, USA
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Kerman R, Stepkowski S, Hoover A, Tu T, Hosek K, Victor B, Reverdin S, Varughese E, Radovancevic R, Frazier O, Radovancevic B. 251: Clinical relevance of crossmatch results, HLA and non-HLA Ab antibodies for cardiac allograft recipients. J Heart Lung Transplant 2007. [DOI: 10.1016/j.healun.2006.11.270] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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Reverdin S, Varughese E, Radovancevic R, Hoover A, Tu T, Hosek K, Victor B, Stepkowski S, Radovancevic B, Frazier O, Kerman R. 545: Impact of pretransplant statin treatment on sensitization and crossmatch results of cardiac allograft recipients. J Heart Lung Transplant 2007. [DOI: 10.1016/j.healun.2006.11.569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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Adler SS, Afanasiev S, Aidala C, Ajitanand NN, Akiba Y, Al-Jamel A, Alexander J, Aoki K, Aphecetche L, Armendariz R, Aronson SH, Averbeck R, Awes TC, Babintsev V, Baldisseri A, Barish KN, Barnes PD, Bassalleck B, Bathe S, Batsouli S, Baublis V, Bauer F, Bazilevsky A, Belikov S, Bjorndal MT, Boissevain JG, Borel H, Brooks ML, Brown DS, Bruner N, Bucher D, Buesching H, Bumazhnov V, Bunce G, Burward-Hoy JM, Butsyk S, Camard X, Chand P, Chang WC, Chernichenko S, Chi CY, Chiba J, Chiu M, Choi IJ, Choudhury RK, Chujo T, Cianciolo V, Cobigo Y, Cole BA, Comets MP, Constantin P, Csanád M, Csörgo T, Cussonneau JP, d'Enterria D, Das K, David G, Deák F, Delagrange H, Denisov A, Deshpande A, Desmond EJ, Devismes A, Dietzsch O, Drachenberg JL, Drapier O, Drees A, Durum A, Dutta D, Dzhordzhadze V, Efremenko YV, En'yo H, Espagnon B, Esumi S, Fields DE, Finck C, Fleuret F, Fokin SL, Fox BD, Fraenkel Z, Frantz JE, Franz A, Frawley AD, Fukao Y, Fung SY, Gadrat S, Germain M, Glenn A, Gonin M, Gosset J, Goto Y, Granier de Cassagnac R, Grau N, Greene SV, Perdekamp MG, Gustafsson HA, Hachiya T, Haggerty JS, Hamagaki H, Hansen AG, Hartouni EP, Harvey M, Hasuko K, Hayano R, He X, Heffner M, Hemmick TK, Heuser JM, Hidas P, Hiejima H, Hill JC, Hobbs R, Holzmann W, Homma K, Hong B, Hoover A, Horaguchi T, Ichihara T, Ikonnikov VV, Imai K, Inaba M, Inuzuka M, Isenhower D, Isenhower L, Ishihara M, Issah M, Isupov A, Jacak BV, Jia J, Jinnouchi O, Johnson BM, Johnson SC, Joo KS, Jouan D, Kajihara F, Kametani S, Kamihara N, Kaneta M, Kang JH, Katou K, Kawabata T, Kazantsev AV, Kelly S, Khachaturov B, Khanzadeev A, Kikuchi J, Kim DJ, Kim E, Kim GB, Kim HJ, Kinney E, Kiss A, Kistenev E, Kiyomichi A, Klein-Boesing C, Kobayashi H, Kochenda L, Kochetkov V, Kohara R, Komkov B, Konno M, Kotchetkov D, Kozlov A, Kroon PJ, Kuberg CH, Kunde GJ, Kurita K, Kweon MJ, Kwon Y, Kyle GS, Lacey R, Lajoie JG, Le Bornec Y, Lebedev A, Leckey S, Lee DM, Leitch MJ, Leite MAL, Li XH, Lim H, Litvinenko A, Liu MX, Maguire CF, Makdisi YI, Malakhov A, Manko VI, Mao Y, Martinez G, Masui H, Matathias F, Matsumoto T, McCain MC, McGaughey PL, Miake Y, Miller TE, Milov A, Mioduszewski S, Mishra GC, Mitchell JT, Mohanty AK, Morrison DP, Moss JM, Mukhopadhyay D, Muniruzzaman M, Nagamiya S, Nagle JL, Nakamura T, Newby J, Nyanin AS, Nystrand J, O'brien E, Ogilvie CA, Ohnishi H, Ojha ID, Okada H, Okada K, Oskarsson A, Otterlund I, Oyama K, Ozawa K, Pal D, Palounek APT, Pantuev V, Papavassiliou V, Park J, Park WJ, Pate SF, Pei H, Penev V, Peng JC, Pereira H, Peresedov V, Pierson A, Pinkenburg C, Pisani RP, Purschke ML, Purwar AK, Qualls JM, Rak J, Ravinovich I, Read KF, Reuter M, Reygers K, Riabov V, Riabov Y, Roche G, Romana A, Rosati M, Rosendahl SSE, Rosnet P, Rykov VL, Ryu SS, Saito N, Sakaguchi T, Sakai S, Samsonov V, Sanfratello L, Santo R, Sato HD, Sato S, Sawada S, Schutz Y, Semenov V, Seto R, Shea TK, Shein I, Shibata TA, Shigaki K, Shimomura M, Sickles A, Silva CL, Silvermyr D, Sim KS, Soldatov A, Soltz RA, Sondheim WE, Sorensen SP, Sourikova IV, Staley F, Stankus PW, Stenlund E, Stepanov M, Ster A, Stoll SP, Sugitate T, Sullivan JP, Takagi S, Takagui EM, Taketani A, Tanaka KH, Tanaka Y, Tanida K, Tannenbaum MJ, Taranenko A, Tarján P, Thomas TL, Togawa M, Tojo J, Torii H, Towell RS, Tram VN, Tserruya I, Tsuchimoto Y, Tydesjö H, Tyurin N, Uam TJ, Velkovska J, Velkovsky M, Veszprémi V, Vinogradov AA, Volkov MA, Vznuzdaev E, Wang XR, Watanabe Y, White SN, Willis N, Wohn FK, Woody CL, Xie W, Yanovich A, Yokkaichi S, Young GR, Yushmanov IE, Zajc WA, Zaudtke O, Zhang C, Zhou S, Zimányi J, Zolin L, Zong X, Van Hecke HW. Measurement of direct photon production in p+p collisions at sqrt[s] = 200 GeV. Phys Rev Lett 2007; 98:012002. [PMID: 17358469 DOI: 10.1103/physrevlett.98.012002] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2006] [Indexed: 05/14/2023]
Abstract
Cross sections for midrapidity production of direct photons in p+p collisions at the Relativistic Heavy Ion Collider (RHIC) are reported for transverse momenta of 3 < pT < 16 GeV/c. Next-to-leading order perturbative QCD (pQCD) describes the data well for pT >5 GeV/c, where the uncertainties of the measurement and theory are comparable. We also report on the effect of requiring the photons to be isolated from parton jet energy. The observed fraction of isolated photons is well described by pQCD for pT >7 GeV/c.
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Affiliation(s)
- S S Adler
- Brookhaven National Laboratory, Upton, NY 11973-5000, USA
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Adler SS, Afanasiev S, Aidala C, Ajitanand NN, Akiba Y, Alexander J, Amirikas R, Aphecetche L, Aronson SH, Averbeck R, Awes TC, Azmoun R, Babintsev V, Baldisseri A, Barish KN, Barnes PD, Bassalleck B, Bathe S, Batsouli S, Baublis V, Bazilevsky A, Belikov S, Berdnikov Y, Bhagavatula S, Boissevain JG, Borel H, Borenstein S, Brooks ML, Brown DS, Bruner N, Bucher D, Buesching H, Bumazhnov V, Bunce G, Burward-Hoy JM, Butsyk S, Camard X, Chai JS, Chand P, Chang WC, Chernichenko S, Chi CY, Chiba J, Chiu M, Choi IJ, Choi J, Choudhury RK, Chujo T, Cianciolo V, Cobigo Y, Cole BA, Constantin P, d'Enterria D, David G, Delagrange H, Denisov A, Deshpande A, Desmond EJ, Devismes A, Dietzsch O, Drapier O, Drees A, du Rietz R, Durum A, Dutta D, Efremenko YV, El Chenawi K, Enokizono A, En'yo H, Esumi S, Ewell L, Fields DE, Fleuret F, Fokin SL, Fox BD, Fraenkel Z, Frantz JE, Franz A, Frawley AD, Fung SY, Garpman S, Ghosh TK, Glenn A, Gogiberidze G, Gonin M, Gosset J, Goto Y, Granier de Cassagnac R, Grau N, Greene SV, Grosse Perdekamp M, Guryn W, Gustafsson HA, Hachiya T, Haggerty JS, Hamagaki H, Hansen AG, Hartouni EP, Harvey M, Hayano R, Hayashi N, He X, Heffner M, Hemmick TK, Heuser JM, Hibino M, Hill JC, Holzmann W, Homma K, Hong B, Hoover A, Ichihara T, Ikonnikov VV, Imai K, Isenhower D, Ishihara M, Issah M, Isupov A, Jacak BV, Jang WY, Jeong Y, Jia J, Jinnouchi O, Johnson BM, Johnson SC, Joo KS, Jouan D, Kametani S, Kamihara N, Kang JH, Kapoor SS, Katou K, Kelly S, Khachaturov B, Khanzadeev A, Kikuchi J, Kim DH, Kim DJ, Kim DW, Kim E, Kim GB, Kim HJ, Kistenev E, Kiyomichi A, Kiyoyama K, Klein-Boesing C, Kobayashi H, Kochenda L, Kochetkov V, Koehler D, Kohama T, Kopytine M, Kotchetkov D, Kozlov A, Kroon PJ, Kuberg CH, Kurita K, Kuroki Y, Kweon MJ, Kwon Y, Kyle GS, Lacey R, Ladygin V, Lajoie JG, Lebedev A, Leckey S, Lee DM, Lee S, Leitch MJ, Li XH, Lim H, Litvinenko A, Liu MX, Liu Y, Maguire CF, Makdisi YI, Malakhov A, Manko VI, Mao Y, Martinez G, Marx MD, Masui H, Matathias F, Matsumoto T, McGaughey PL, Melnikov E, Messer F, Miake Y, Milan J, Miller TE, Milov A, Mioduszewski S, Mischke RE, Mishra GC, Mitchell JT, Mohanty AK, Morrison DP, Moss JM, Mühlbacher F, Mukhopadhyay D, Muniruzzaman M, Murata J, Nagamiya S, Nagle JL, Nakamura T, Nandi BK, Nara M, Newby J, Nilsson P, Nyanin AS, Nystrand J, O'Brien E, Ogilvie CA, Ohnishi H, Ojha ID, Okada K, Ono M, Onuchin V, Oskarsson A, Otterlund I, Oyama K, Ozawa K, Pal D, Palounek APT, Pantuev V, Papavassiliou V, Park J, Parmar A, Pate SF, Peitzmann T, Peng JC, Peresedov V, Pinkenburg C, Pisani RP, Plasil F, Purschke ML, Purwar AK, Rak J, Ravinovich I, Read KF, Reuter M, Reygers K, Riabov V, Riabov Y, Roche G, Romana A, Rosati M, Rosnet P, Ryu SS, Sadler ME, Saito N, Sakaguchi T, Sakai M, Sakai S, Samsonov V, Sanfratello L, Santo R, Sato HD, Sato S, Sawada S, Schutz Y, Semenov V, Seto R, Shaw MR, Shea TK, Shibata TA, Shigaki K, Shiina T, Silva CL, Silvermyr D, Sim KS, Singh CP, Singh V, Sivertz M, Soldatov A, Soltz RA, Sondheim WE, Sorensen SP, Sourikova IV, Staley F, Stankus PW, Stenlund E, Stepanov M, Ster A, Stoll SP, Sugitate T, Sullivan JP, Takagui EM, Taketani A, Tamai M, Tanaka KH, Tanaka Y, Tanida K, Tannenbaum MJ, Tarján P, Tepe JD, Thomas TL, Tojo J, Torii H, Towell RS, Tserruya I, Tsuruoka H, Tuli SK, Tydesjö H, Tyurin N, van Hecke HW, Velkovska J, Velkovsky M, Veszprémi V, Villatte L, Vinogradov AA, Volkov MA, Vznuzdaev E, Wang XR, Watanabe Y, White SN, Wohn FK, Woody CL, Xie W, Yang Y, Yanovich A, Yokkaichi S, Young GR, Yushmanov IE, Zajc WA, Zhang C, Zhou S, Zhou SJ, Zolin L. Dense-medium modifications to jet-induced hadron pair distributions in Au+Au collisions at sqrt s NN=200 GeV. Phys Rev Lett 2006; 97:052301. [PMID: 17026095 DOI: 10.1103/physrevlett.97.052301] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2005] [Indexed: 05/12/2023]
Abstract
Azimuthal correlations of jet-induced high-p(T) charged hadron pairs are studied at midrapidity in Au+Au collisions at sqrt[s(NN)]=200 GeV. The distribution of jet-associated partner hadrons (1.0<p(T)<2.5 GeV/c) per trigger hadron (2.5<p(T)<4.0 GeV/c) is found to vary with collision centrality, in both shape and yield, indicating a significant effect of the nuclear collision medium on the jet fragmentation process.
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Affiliation(s)
- S S Adler
- Brookhaven National Laboratory, Upton, New York 11973-5000, USA
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Adler SS, Afanasiev S, Aidala C, Ajitanand NN, Akiba Y, Al-Jamel A, Alexander J, Aoki K, Aphecetche L, Armendariz R, Aronson SH, Averbeck R, Awes TC, Babintsev V, Baldisseri A, Barish KN, Barnes PD, Bassalleck B, Bathe S, Batsouli S, Baublis V, Bauer F, Bazilevsky A, Belikov S, Bjorndal MT, Boissevain JG, Borel H, Brooks ML, Brown DS, Bruner N, Bucher D, Buesching H, Bumazhnov V, Bunce G, Burward-Hoy JM, Butsyk S, Camard X, Chand P, Chang WC, Chernichenko S, Chi CY, Chiba J, Chiu M, Choi IJ, Choudhury RK, Chujo T, Cianciolo V, Cobigo Y, Cole BA, Comets MP, Constantin P, Csanád M, Csörgo T, Cussonneau JP, d'Enterria D, Das K, David G, Deák F, Delagrange H, Denisov A, Deshpande A, Desmond EJ, Devismes A, Dietzsch O, Drachenberg JL, Drapier O, Drees A, Durum A, Dutta D, Dzhordzhadze V, Efremenko YV, En'yo H, Espagnon B, Esumi S, Fields DE, Finck C, Fleuret F, Fokin SL, Fox BD, Fraenkel Z, Frantz JE, Franz A, Frawley AD, Fukao Y, Fung SY, Gadrat S, Germain M, Glenn A, Gonin M, Gosset J, Goto Y, Granier de Cassagnac R, Grau N, Greene SV, Perdekamp MG, Gustafsson HA, Hachiya T, Haggerty JS, Hamagaki H, Hansen AG, Hartouni EP, Harvey M, Hasuko K, Hayano R, He X, Heffner M, Hemmick TK, Heuser JM, Hidas P, Hiejima H, Hill JC, Hobbs R, Holzmann W, Homma K, Hong B, Hoover A, Horaguchi T, Ichihara T, Ikonnikov VV, Imai K, Inaba M, Inuzuka M, Isenhower D, Isenhower L, Ishihara M, Issah M, Isupov A, Jacak BV, Jia J, Jinnouchi O, Johnson BM, Johnson SC, Joo KS, Jouan D, Kajihara F, Kametani S, Kamihara N, Kaneta M, Kang JH, Katou K, Kawabata T, Kazantsev AV, Kelly S, Khachaturov B, Khanzadeev A, Kikuchi J, Kim DJ, Kim E, Kim GB, Kim HJ, Kinney E, Kiss A, Kistenev E, Kiyomichi A, Klein-Boesing C, Kobayashi H, Kochenda L, Kochetkov V, Kohara R, Komkov B, Konno M, Kotchetkov D, Kozlov A, Kroon PJ, Kuberg CH, Kunde GJ, Kurita K, Kweon MJ, Kwon Y, Kyle GS, Lacey R, Lajoie JG, Le Bornec Y, Lebedev A, Leckey S, Lee DM, Leitch MJ, Leite MAL, Li XH, Lim H, Litvinenko A, Liu MX, Maguire CF, Makdisi YI, Malakhov A, Manko VI, Mao Y, Martinez G, Masui H, Matathias F, Matsumoto T, McCain MC, McGaughey PL, Miake Y, Miller TE, Milov A, Mioduszewski S, Mishra GC, Mitchell JT, Mohanty AK, Morrison DP, Moss JM, Mukhopadhyay D, Muniruzzaman M, Nagamiya S, Nagle JL, Nakamura T, Newby J, Nyanin AS, Nystrand J, O'Brien E, Ogilvie CA, Ohnishi H, Ojha ID, Okada H, Okada K, Oskarsson A, Otterlund I, Oyama K, Ozawa K, Pal D, Palounek APT, Pantuev V, Papavassiliou V, Park J, Park WJ, Pate SF, Pei H, Penev V, Peng JC, Pereira H, Peresedov V, Pierson A, Pinkenburg C, Pisani RP, Purschke ML, Purwar AK, Qualls JM, Rak J, Ravinovich I, Read KF, Reuter M, Reygers K, Riabov V, Riabov Y, Roche G, Romana A, Rosati M, Rosendahl SSE, Rosnet P, Rykov VL, Ryu SS, Saito N, Sakaguchi T, Sakai S, Samsonov V, Sanfratello L, Santo R, Sato HD, Sato S, Sawada S, Schutz Y, Semenov V, Seto R, Shea TK, Shein I, Shibata TA, Shigaki K, Shimomura M, Sickles A, Silva CL, Silvermyr D, Sim KS, Soldatov A, Soltz RA, Sondheim WE, Sorensen SP, Sourikova IV, Staley F, Stankus PW, Stenlund E, Stepanov M, Ster A, Stoll SP, Sugitate T, Sullivan JP, Takagi S, Takagui EM, Taketani A, Tanaka KH, Tanaka Y, Tanida K, Tannenbaum MJ, Taranenko A, Tarján P, Thomas TL, Togawa M, Tojo J, Torii H, Towell RS, Tram VN, Tserruya I, Tsuchimoto Y, Tydesjö H, Tyurin N, Uam TJ, van Hecke HW, Velkovska J, Velkovsky M, Veszprémi V, Vinogradov AA, Volkov MA, Vznuzdaev E, Wang XR, Watanabe Y, White SN, Willis N, Wohn FK, Woody CL, Xie W, Yanovich A, Yokkaichi S, Young GR, Yushmanov IE, Zajc WA, Zhang C, Zhou S, Zimányi J, Zolin L, Zong X. Azimuthal angle correlations for rapidity separated Hadron pairs in d+Au collisions at square root of sNN=200 GeV. Phys Rev Lett 2006; 96:222301. [PMID: 16803304 DOI: 10.1103/physrevlett.96.222301] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2006] [Indexed: 05/10/2023]
Abstract
Deuteron-gold (d+Au) collisions at the Relativistic Heavy Ion Collider provide ideal platforms for testing QCD theories in dense nuclear matter at high energy. In particular, models suggesting strong saturation effects for partons carrying small nucleon momentum fraction (x) predict modifications to jet production at forward rapidity (deuteron-going direction) in d+Au collisions. We report on two-particle azimuthal angle correlations between charged hadrons at forward/backward (deuteron/gold going direction) rapidity and charged hadrons at midrapidity in d+Au and p+p collisions at square root of sNN=200 GeV. Jet structures observed in the correlations are quantified in terms of the conditional yield and angular width of away-side partners. The kinematic region studied here samples partons in the gold nucleus with x~0.1 to ~0.01. Within this range, we find no x dependence of the jet structure in d+Au collisions.
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Affiliation(s)
- S S Adler
- Brookhaven National Laboratory, Upton, New York 11973-5000, USA
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Adler SS, Afanasiev S, Aidala C, Ajitanand NN, Akiba Y, Alexander J, Amirikas R, Aphecetche L, Aronson SH, Averbeck R, Awes TC, Azmoun R, Babintsev V, Baldisseri A, Barish KN, Barnes PD, Bassalleck B, Bathe S, Batsouli S, Baublis V, Bazilevsky A, Belikov S, Berdnikov Y, Bhagavatula S, Boissevain JG, Borel H, Borenstein S, Brooks ML, Brown DS, Bruner N, Bucher D, Buesching H, Bumazhnov V, Bunce G, Burward-Hoy JM, Butsyk S, Camard X, Chai JS, Chand P, Chang WC, Chernichenko S, Chi CY, Chiba J, Chiu M, Choi IJ, Choi J, Choudhury RK, Chujo T, Cianciolo V, Cobigo Y, Cole BA, Constantin P, d'Enterria D, David G, Delagrange H, Denisov A, Deshpande A, Desmond EJ, Devismes A, Dietzsch O, Drapier O, Drees A, du Rietz R, Durum A, Dutta D, Efremenko YV, Chenawi KE, Enokizono A, En'yo H, Esumi S, Ewell L, Fields DE, Fleuret F, Fokin SL, Fox BD, Fraenkel Z, Frantz JE, Franz A, Frawley AD, Fung SY, Garpman S, Ghosh TK, Glenn A, Gogiberidze G, Gonin M, Gosset J, Goto Y, de Cassagnac RG, Grau N, Greene SV, Perdekamp MG, Guryn W, Gustafsson HA, Hachiya T, Haggerty JS, Hamagaki H, Hansen AG, Hartouni EP, Harvey M, Hayano R, Hayashi N, He X, Heffner M, Hemmick TK, Heuser JM, Hibino M, Hiejima H, Hill JC, Holzmann W, Homma K, Hong B, Hoover A, Ichihara T, Ikonnikov VV, Imai K, Isenhower D, Ishihara M, Issah M, Isupov A, Jacak BV, Jang WY, Jeong Y, Jia J, Jinnouchi O, Johnson BM, Johnson SC, Joo KS, Jouan D, Kametani S, Kamihara N, Kang JH, Kapoor SS, Katou K, Kelly S, Khachaturov B, Khanzadeev A, Kikuchi J, Kim DH, Kim DJ, Kim DW, Kim E, Kim GB, Kim HJ, Kistenev E, Kiyomichi A, Kiyoyama K, Klein-Boesing C, Kobayashi H, Kochenda L, Kochetkov V, Koehler D, Kohama T, Kopytine M, Kotchetkov D, Kozlov A, Kroon PJ, Kuberg CH, Kurita K, Kuroki Y, Kweon MJ, Kwon Y, Kyle GS, Lacey R, Ladygin V, Lajoie JG, Lebedev A, Leckey S, Lee DM, Lee S, Leitch MJ, Li XH, Lim H, Litvinenko A, Liu MX, Liu Y, Maguire CF, Makdisi YI, Malakhov A, Manko VI, Mao Y, Martinez G, Marx MD, Masui H, Matathias F, Matsumoto T, McGaughey PL, Melnikov E, Messer F, Miake Y, Milan J, Miller TE, Milov A, Mioduszewski S, Mischke RE, Mishra GC, Mitchell JT, Mohanty AK, Morrison DP, Moss JM, Mühlbacher F, Mukhopadhyay D, Muniruzzaman M, Murata J, Nagamiya S, Nagle JL, Nakamura T, Nandi BK, Nara M, Newby J, Nilsson P, Nyanin AS, Nystrand J, O'Brien E, Ogilvie CA, Ohnishi H, Ojha ID, Okada K, Ono M, Onuchin V, Oskarsson A, Otterlund I, Oyama K, Ozawa K, Pal D, Palounek APT, Pantuev V, Papavassiliou V, Park J, Parmar A, Pate SF, Peitzmann T, Peng JC, Peresedov V, Pinkenburg C, Pisani RP, Plasil F, Purschke ML, Purwar AK, Rak J, Ravinovich I, Read KF, Reuter M, Reygers K, Riabov V, Riabov Y, Roche G, Romana A, Rosati M, Rosnet P, Ryu SS, Sadler ME, Sahlmueller B, Saito N, Sakaguchi T, Sakai M, Sakai S, Samsonov V, Sanfratello L, Santo R, Sato HD, Sato S, Sawada S, Schutz Y, Semenov V, Seto R, Shaw MR, Shea TK, Shibata TA, Shigaki K, Shiina T, Silva CL, Silvermyr D, Sim KS, Singh CP, Singh V, Sivertz M, Soldatov A, Soltz RA, Sondheim WE, Sorensen SP, Sourikova IV, Staley F, Stankus PW, Stenlund E, Stepanov M, Ster A, Stoll SP, Sugitate T, Sullivan JP, Takagui EM, Taketani A, Tamai M, Tanaka KH, Tanaka Y, Tanida K, Tannenbaum MJ, Tarján P, Tepe JD, Thomas TL, Tojo J, Torii H, Towell RS, Tserruya I, Tsuruoka H, Tuli SK, Tydesjö H, Tyurin N, van Hecke HW, Velkovska J, Velkovsky M, Veszprémi V, Villatte L, Vinogradov AA, Volkov MA, Vznuzdaev E, Wang XR, Watanabe Y, White SN, Wohn FK, Woody CL, Xie W, Yang Y, Yanovich A, Yokkaichi S, Young GR, Yushmanov IE, Zajc WA, Zhang C, Zhou S, Zhou SJ, Zolin L. Common suppression pattern of eta and pi0 mesons at high transverse momentum in Au + Au collisions at square root S(NN) = 200 GeV. Phys Rev Lett 2006; 96:202301. [PMID: 16803168 DOI: 10.1103/physrevlett.96.202301] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2006] [Indexed: 05/10/2023]
Abstract
Inclusive transverse momentum spectra of eta mesons have been measured within p(T) = 2-10 GeV/c at midrapidity by the PHENIX experiment in Au + Au collisions at square root S(NN) = 200 GeV. In central Au+Au the eta yields are significantly suppressed compared to peripheral Au + Au, d + Au, and p + p yields scaled by the corresponding number of nucleon-nucleon collisions. The magnitude, centrality, and p(T) dependence of the suppression is common, within errors, for eta and pi0. The ratio of eta to pi0 spectra at high p(T) amounts to 0.40 < R(eta/pi)0 < 0.48 for the three systems, in agreement with the world average measured in hadronic and nuclear reactions and, at large scaled momentum, in e+e- collisions.
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Affiliation(s)
- S S Adler
- Brookhaven National Laboratory, Upton, New York 11973-5000, USA
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Seftel A, Farber J, Fletcher J, Deeley M, Elion-Mboussa A, Hoover A, Yu A, Fredlund P. A Three-Part Study to Investigate the Incidence and Potential Etiologies of Tadalafil-Associated Back Pain or Myalgia. J Urol 2006. [DOI: 10.1016/s0022-5347(05)00874-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- A.D. Seftel
- Case Western Reserve University, University Hospitals of Cleveland, Cleveland, Ohio
| | - J. Farber
- Case Western Reserve University, University Hospitals of Cleveland, Cleveland, Ohio
| | - J. Fletcher
- Case Western Reserve University, University Hospitals of Cleveland, Cleveland, Ohio
| | - M.C. Deeley
- Case Western Reserve University, University Hospitals of Cleveland, Cleveland, Ohio
| | - A. Elion-Mboussa
- Case Western Reserve University, University Hospitals of Cleveland, Cleveland, Ohio
| | - A. Hoover
- Case Western Reserve University, University Hospitals of Cleveland, Cleveland, Ohio
| | - A. Yu
- Case Western Reserve University, University Hospitals of Cleveland, Cleveland, Ohio
| | - P. Fredlund
- Case Western Reserve University, University Hospitals of Cleveland, Cleveland, Ohio
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Adler SS, Afanasiev S, Aidala C, Ajitanand NN, Akiba Y, Alexander J, Amirikas R, Aphecetche L, Aronson SH, Averbeck R, Awes TC, Azmoun R, Babintsev V, Baldisseri A, Barish KN, Barnes PD, Bassalleck B, Bathe S, Batsouli S, Baublis V, Bazilevsky A, Belikov S, Berdnikov Y, Bhagavatula S, Boissevain JG, Borel H, Borenstein S, Brooks ML, Brown DS, Bruner N, Bucher D, Buesching H, Bumazhnov V, Bunce G, Burward-Hoy JM, Butsyk S, Camard X, Chai JS, Chand P, Chang WC, Chernichenko S, Chi CY, Chiba J, Chiu M, Choi IJ, Choi J, Choudhury RK, Chujo T, Cianciolo V, Cobigo Y, Cole BA, Constantin P, d'Enterria D, David G, Delagrange H, Denisov A, Deshpande A, Desmond EJ, Devismes A, Dietzsch O, Drapier O, Drees A, du Rietz R, Durum A, Dutta D, Efremenko YV, El Chenawi K, Enokizono A, En'yo H, Esumi S, Ewell L, Fields DE, Fleuret F, Fokin SL, Fox BD, Fraenkel Z, Frantz JE, Franz A, Frawley AD, Fung SY, Garpman S, Ghosh TK, Glenn A, Gogiberidze G, Gonin M, Gosset J, Goto Y, de Cassagnac RG, Grau N, Greene SV, Perdekamp MG, Guryn W, Gustafsson HA, Hachiya T, Haggerty JS, Hamagaki H, Hansen AG, Hartouni EP, Harvey M, Hayano R, Hayashi N, He X, Heffner M, Hemmick TK, Heuser JM, Hibino M, Hill JC, Holzmann W, Homma K, Hong B, Hoover A, Ichihara T, Ikonnikov VV, Imai K, Isenhower D, Ishihara M, Issah M, Isupov A, Jacak BV, Jang WY, Jeong Y, Jia J, Jinnouchi O, Johnson BM, Johnson SC, Joo KS, Jouan D, Kametani S, Kamihara N, Kang JH, Kapoor SS, Katou K, Kelly S, Khachaturov B, Khanzadeev A, Kikuchi J, Kim DH, Kim DJ, Kim DW, Kim E, Kim GB, Kim HJ, Kistenev E, Kiyomichi A, Kiyoyama K, Klein-Boesing C, Kobayashi H, Kochenda L, Kochetkov V, Koehler D, Kohama T, Kopytine M, Kotchetkov D, Kozlov A, Kroon PJ, Kuberg CH, Kurita K, Kuroki Y, Kweon MJ, Kwon Y, Kyle GS, Lacey R, Ladygin V, Lajoie JG, Lebedev A, Leckey S, Lee DM, Lee S, Leitch MJ, Li XH, Lim H, Litvinenko A, Liu MX, Liu Y, Maguire CF, Makdisi YI, Malakhov A, Manko VI, Mao Y, Martinez G, Marx MD, Masui H, Matathias F, Matsumoto T, McGaughey PL, Melnikov E, Messer F, Miake Y, Milan J, Miller TE, Milov A, Mioduszewski S, Mischke RE, Mishra GC, Mitchell JT, Mohanty AK, Morrison DP, Moss JM, Mühlbacher F, Mukhopadhyay D, Muniruzzaman M, Murata J, Nagamiya S, Nagle JL, Nakamura T, Nandi BK, Nara M, Newby J, Nilsson P, Nyanin AS, Nystrand J, O'Brien E, Ogilvie CA, Ohnishi H, Ojha ID, Okada K, Ono M, Onuchin V, Oskarsson A, Otterlund I, Oyama K, Ozawa K, Pal D, Palounek APT, Pantuev V, Papavassiliou V, Park J, Parmar A, Pate SF, Peitzmann T, Peng JC, Peresedov V, Pinkenburg C, Pisani RP, Plasil F, Purschke ML, Purwar AK, Rak J, Ravinovich I, Read KF, Reuter M, Reygers K, Riabov V, Riabov Y, Roche G, Romana A, Rosati M, Rosnet P, Ryu SS, Sadler ME, Saito N, Sakaguchi T, Sakai M, Sakai S, Samsonov V, Sanfratello L, Santo R, Sato HD, Sato S, Sawada S, Schutz Y, Semenov V, Seto R, Shaw MR, Shea TK, Shibata TA, Shigaki K, Shiina T, Silva CL, Silvermyr D, Sim KS, Singh CP, Singh V, Sivertz M, Soldatov A, Soltz RA, Sondheim WE, Sorensen SP, Sourikova IV, Staley F, Stankus PW, Stenlund E, Stepanov M, Ster A, Stoll SP, Sugitate T, Sullivan JP, Takagui EM, Taketani A, Tamai M, Tanaka KH, Tanaka Y, Tanida K, Tannenbaum MJ, Tarján P, Tepe JD, Thomas TL, Tojo J, Torii H, Towell RS, Tserruya I, Tsuruoka H, Tuli SK, Tydesjö H, Tyurin N, van Hecke HW, Velkovska J, Velkovsky M, Veszprémi V, Villatte L, Vinogradov AA, Volkov MA, Vznuzdaev E, Wang XR, Watanabe Y, White SN, Wohn FK, Woody CL, Xie W, Yang Y, Yanovich A, Yokkaichi S, Young GR, Yushmanov IE, Zajc WA, Zhang C, Zhou S, Zhou SJ, Zolin L. Single electrons from heavy-flavor decays in collisions at. Phys Rev Lett 2006; 96:032001. [PMID: 16486684 DOI: 10.1103/physrevlett.96.032001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2005] [Indexed: 05/06/2023]
Abstract
The invariant differential cross section for inclusive electron production in p+p collisions at [FORMULA: SEE TEXT] has been measured by the PHENIX experiment at the BNL Relativistic Heavy Ion Collider over the transverse momentum range 0.4<or=pT<OR=5.0 GeV/c in the central rapidity region ([FORMULA: SEE TEXT]). The contribution to the inclusive electron spectrum from semileptonic decays of hadrons carrying heavy flavor, i.e., charm quarks or, at high , bottom quarks, is determined via three independent methods. The resulting electron spectrum from heavy-flavor decays is compared to recent leading and next-to-leading order perturbative QCD calculations. The total cross section of charm quark-antiquark pair production is determined to be [FORMULA: SEE TEXT].
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Affiliation(s)
- S S Adler
- Brookhaven National Laboratory, Upton, New York 11973-5000, USA
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Adler SS, Afanasiev S, Aidala C, Ajitanand NN, Akiba Y, Alexander J, Amirikas R, Aphecetche L, Aronson SH, Averbeck R, Awes TC, Azmoun R, Babintsev V, Baldisseri A, Barish KN, Barnes PD, Bassalleck B, Bathe S, Batsouli S, Baublis V, Bazilevsky A, Belikov S, Berdnikov Y, Bhagavatula S, Boissevain JG, Borel H, Borenstein S, Brooks ML, Brown DS, Bruner N, Bucher D, Buesching H, Bumazhnov V, Bunce G, Burward-Hoy JM, Butsyk S, Camard X, Chai JS, Chand P, Chang WC, Chernichenko S, Chi CY, Chiba J, Chiu M, Choi IJ, Choi J, Choudhury RK, Chujo T, Cianciolo V, Cobigo Y, Cole BA, Constantin P, d'Enterria D, David G, Delagrange H, Denisov A, Deshpande A, Desmond EJ, Devismes A, Dietzsch O, Drapier O, Drees A, du Rietz R, Durum A, Dutta D, Efremenko YV, El Chenawi K, Enokizono A, En'yo H, Esumi S, Ewell L, Fields DE, Fleuret F, Fokin SL, Fox BD, Fraenkel Z, Frantz JE, Franz A, Frawley AD, Fung SY, Garpman S, Ghosh TK, Glenn A, Gogiberidze G, Gonin M, Gosset J, Goto Y, de Cassagnac RG, Grau N, Greene SV, Perdekamp MG, Guryn W, Gustafsson HA, Hachiya T, Haggerty JS, Hamagaki H, Hansen AG, Hartouni EP, Harvey M, Hayano R, Hayashi N, He X, Heffner M, Hemmick TK, Heuser JM, Hibino M, Hill JC, Holzmann W, Homma K, Hong B, Hoover A, Ichihara T, Ikonnikov VV, Imai K, Isenhower D, Ishihara M, Issah M, Isupov A, Jacak BV, Jang WY, Jeong Y, Jia J, Jinnouchi O, Johnson BM, Johnson SC, Joo KS, Jouan D, Kametani S, Kamihara N, Kaneta M, Kang JH, Kapoor SS, Katou K, Kelly S, Khachaturov B, Khanzadeev A, Kikuchi J, Kim DH, Kim DJ, Kim DW, Kim E, Kim GB, Kim HJ, Kistenev E, Kiyomichi A, Kiyoyama K, Klein-Boesing C, Kobayashi H, Kochenda L, Kochetkov V, Koehler D, Kohama T, Kopytine M, Kotchetkov D, Kozlov A, Kroon PJ, Kuberg CH, Kurita K, Kuroki Y, Kweon MJ, Kwon Y, Kyle GS, Lacey R, Ladygin V, Lajoie JG, Lebedev A, Leckey S, Lee DM, Lee S, Leitch MJ, Li XH, Lim H, Litvinenko A, Liu MX, Liu Y, Maguire CF, Makdisi YI, Malakhov A, Manko VI, Mao Y, Martinez G, Marx MD, Masui H, Matathias F, Matsumoto T, McGaughey PL, Melnikov E, Messer F, Miake Y, Milan J, Miller TE, Milov A, Mioduszewski S, Mischke RE, Mishra GC, Mitchell JT, Mohanty AK, Morrison DP, Moss JM, Mühlbacher F, Mukhopadhyay D, Muniruzzaman M, Murata J, Nagamiya S, Nagle JL, Nakamura T, Nandi BK, Nara M, Newby J, Nilsson P, Nyanin AS, Nystrand J, O'Brien E, Ogilvie CA, Ohnishi H, Ojha ID, Okada K, Ono M, Onuchin V, Oskarsson A, Otterlund I, Oyama K, Ozawa K, Pal D, Palounek APT, Pantuev V, Papavassiliou V, Park J, Parmar A, Pate SF, Peitzmann T, Peng JC, Peresedov V, Pinkenburg C, Pisani RP, Plasil F, Purschke ML, Purwar AK, Rak J, Ravinovich I, Read KF, Reuter M, Reygers K, Riabov V, Riabov Y, Roche G, Romana A, Rosati M, Rosnet P, Ryu SS, Sadler ME, Saito N, Sakaguchi T, Sakai M, Sakai S, Samsonov V, Sanfratello L, Santo R, Sato HD, Sato S, Sawada S, Schutz Y, Semenov V, Seto R, Shaw MR, Shea TK, Shibata TA, Shigaki K, Shiina T, Silva CL, Silvermyr D, Sim KS, Singh CP, Singh V, Sivertz M, Soldatov A, Soltz RA, Sondheim WE, Sorensen SP, Sourikova IV, Staley F, Stankus PW, Stenlund E, Stepanov M, Ster A, Stoll SP, Sugitate T, Sullivan JP, Takagui EM, Taketani A, Tamai M, Tanaka KH, Tanaka Y, Tanida K, Tannenbaum MJ, Tarján P, Tepe JD, Thomas TL, Tojo J, Torii H, Towell RS, Tserruya I, Tsuruoka H, Tuli SK, Tydesjö H, Tyurin N, van Hecke HW, Velkovska J, Velkovsky M, Veszprémi V, Villatte L, Vinogradov AA, Volkov MA, Vznuzdaev E, Wang XR, Watanabe Y, White SN, Wohn FK, Woody CL, Xie W, Yang Y, Yanovich A, Yokkaichi S, Young GR, Yushmanov IE, Zajc WA, Zhang C, Zhou S, Zhou SJ, Zolin L. Measurement of identified and inclusive photon second-harmonic parameter and implications for direct photon production in [FORMULA: SEE TEXT] Au+Au. Phys Rev Lett 2006; 96:032302. [PMID: 16486688 DOI: 10.1103/physrevlett.96.032302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2005] [Indexed: 05/06/2023]
Abstract
The azimuthal distribution of identified pi0 and inclusive photons has been measured in [FORMULA: SEE TEXT] Au+Au collisions with the PHENIX experiment at the Relativistic Heavy-Ion Collider (RHIC). The second-harmonic parameter (nu2) was measured to describe the observed anisotropy of the azimuthal distribution. The measured inclusive photon is consistent with the value expected for the photons from hadron decay and is also consistent with the lack of direct photon signal over the measured pT range 1-6 GeV/c. An attempt is made to extract nu2 of direct photons.
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Affiliation(s)
- S S Adler
- Brookhaven National Laboratory, Upton, New York 11973-5000, USA
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Adler SS, Afanasiev S, Aidala C, Ajitanand NN, Akiba Y, Alexander J, Amirikas R, Aphecetche L, Aronson SH, Averbeck R, Awes TC, Azmoun R, Babintsev V, Baldisseri A, Barish KN, Barnes PD, Bassalleck B, Bathe S, Batsouli S, Baublis V, Bazilevsky A, Belikov S, Berdnikov Y, Bhagavatula S, Boissevain JG, Borel H, Borenstein S, Brooks ML, Brown DS, Bruner N, Bucher D, Buesching H, Bumazhnov V, Bunce G, Burward-Hoy JM, Butsyk S, Camard X, Chai JS, Chand P, Chang WC, Chernichenko S, Chi CY, Chiba J, Chiu M, Choi IJ, Choi J, Choudhury RK, Chujo T, Cianciolo V, Cobigo Y, Cole BA, Constantin P, d'Enterria D, David G, Delagrange H, Denisov A, Deshpande A, Desmond EJ, Devismes A, Dietzsch O, Drapier O, Drees A, du Rietz R, Durum A, Dutta D, Efremenko YV, Egdemir J, El Chenawi K, Enokizono A, En'yo H, Esumi S, Ewell L, Fields DE, Fleuret F, Fokin SL, Fox BD, Fraenkel Z, Frantz JE, Franz A, Frawley AD, Fung SY, Garpman S, Ghosh TK, Glenn A, Gogiberidze G, Gonin M, Gosset J, Goto Y, Granier de Cassagnac R, Grau N, Greene SV, Grosse Perdekamp M, Guryn W, Gustafsson HA, Hachiya T, Haggerty JS, Hamagaki H, Hansen AG, Hartouni EP, Harvey M, Hayano R, Hayashi N, He X, Heffner M, Hemmick TK, Heuser JM, Hibino M, Hill JC, Holzmann W, Homma K, Hong B, Hoover A, Ichihara T, Ikonnikov VV, Imai K, Isenhower D, Ishihara M, Issah M, Isupov A, Jacak BV, Jang WY, Jeong Y, Jia J, Jinnouchi O, Johnson BM, Johnson SC, Joo KS, Jouan D, Kametani S, Kamihara N, Kang JH, Kapoor SS, Katou K, Kelly S, Khachaturov B, Khanzadeev A, Kikuchi J, Kim DH, Kim DJ, Kim DW, Kim E, Kim GB, Kim HJ, Kistenev E, Kiyomichi A, Kiyoyama K, Klein-Boesing C, Kobayashi H, Kochenda L, Kochetkov V, Koehler D, Kohama T, Kopytine M, Kotchetkov D, Kozlov A, Kroon PJ, Kuberg CH, Kurita K, Kuroki Y, Kweon MJ, Kwon Y, Kyle GS, Lacey R, Ladygin V, Lajoie JG, Lebedev A, Leckey S, Lee DM, Lee S, Leitch MJ, Li XH, Lim H, Litvinenko A, Liu MX, Liu Y, Maguire CF, Makdisi YI, Malakhov A, Manko VI, Mao Y, Martinez G, Marx MD, Masui H, Matathias F, Matsumoto T, McGaughey PL, Melnikov E, Messer F, Miake Y, Milan J, Miller TE, Milov A, Mioduszewski S, Mischke RE, Mishra GC, Mitchell JT, Mohanty AK, Morrison DP, Moss JM, Mühlbacher F, Mukhopadhyay D, Muniruzzaman M, Murata J, Nagamiya S, Nagle JL, Nakamura T, Nandi BK, Nara M, Newby J, Nilsson P, Nyanin AS, Nystrand J, O'Brien E, Ogilvie CA, Ohnishi H, Ojha ID, Okada K, Ono M, Onuchin V, Oskarsson A, Otterlund I, Oyama K, Ozawa K, Pal D, Palounek APT, Pantuev V, Papavassiliou V, Park J, Parmar A, Pate SF, Peitzmann T, Peng JC, Peresedov V, Pinkenburg C, Pisani RP, Plasil F, Purschke ML, Purwar AK, Rak J, Ravinovich I, Read KF, Reuter M, Reygers K, Riabov V, Riabov Y, Roche G, Romana A, Rosati M, Rosnet P, Ryu SS, Sadler ME, Saito N, Sakaguchi T, Sakai M, Sakai S, Samsonov V, Sanfratello L, Santo R, Sato HD, Sato S, Sawada S, Schutz Y, Semenov V, Seto R, Shaw MR, Shea TK, Shibata TA, Shigaki K, Shiina T, Silva CL, Silvermyr D, Sim KS, Singh CP, Singh V, Sivertz M, Soldatov A, Soltz RA, Sondheim WE, Sorensen SP, Sourikova IV, Staley F, Stankus PW, Stenlund E, Stepanov M, Ster A, Stoll SP, Sugitate T, Sullivan JP, Takagui EM, Taketani A, Tamai M, Tanaka KH, Tanaka Y, Tanida K, Tannenbaum MJ, Tarján P, Tepe JD, Thomas TL, Tojo J, Torii H, Towell RS, Tserruya I, Tsuruoka H, Tuli SK, Tydesjö H, Tyurin N, van Hecke HW, Velkovska J, Velkovsky M, Veszprémi V, Villatte L, Vinogradov AA, Volkov MA, Vznuzdaev E, Wang XR, Watanabe Y, White SN, Wohn FK, Woody CL, Xie W, Yang Y, Yanovich A, Yokkaichi S, Young GR, Yushmanov IE, Zajc WA, Zhang C, Zhou S, Zhou SJ, Zolin L. Nuclear modification of electron spectra and implications for heavy quark energy loss in Au+Au collisions at [FORMULA: SEE TEXT]. Phys Rev Lett 2006; 96:032301. [PMID: 16486687 DOI: 10.1103/physrevlett.96.032301] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2005] [Indexed: 05/06/2023]
Abstract
The PHENIX experiment has measured midrapidity ([FORMULA: SEE TEXT]) transverse momentum spectra ([FORMULA: SEE TEXT]) of electrons as a function of centrality in Au+Au collisions at [FORMULA: SEE TEXT]. Contributions from photon conversions and from light hadron decays, mainly Dalitz decays of pi0 and eta mesons, were removed. The resulting nonphotonic electron spectra are primarily due to the semileptonic decays of hadrons carrying heavy quarks. Nuclear modification factors were determined by comparison to nonphotonic electrons in p+p collisions. A significant suppression of electrons at high pT is observed in central Au+Au collisions, indicating substantial energy loss of heavy quarks.
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Affiliation(s)
- S S Adler
- Brookhaven National Laboratory, Upton, New York 11973-5000, USA
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