Measurement of associated Z + charm production in proton-proton collisions at s = 8 TeV

A study of the associated production of a Z boson and a charm quark jet ( Z + c ), and a comparison to production with a b quark jet ( Z + b ), in p p collisions at a centre-of-mass energy of 8TeV are presented. The analysis uses a data sample corresponding to an integrated luminosity of 19.7fb - 1 , collected with the CMS detector at the CERN LHC. The Z boson candidates are identified through their decays into pairs of electrons or muons. Jets originating from heavy flavour quarks are identified using semileptonic decays of c or b flavoured hadrons and hadronic decays of charm hadrons. The measurements are performed in the kinematic region with two leptons withp T ℓ > 20 GeV ,| η ℓ | < 2.1 , 71 < m ℓ ℓ < 111 GeV , and heavy flavour jets withp T jet > 25 GeV and| η jet | < 2.5 . The Z + c production cross section is measured to be σ ( p p → Z + c + X ) B ( Z → ℓ + ℓ - ) = 8.8 ± 0.5 (stat) ± 0.6 (syst) pb . The ratio of the Z + c and Z + b production cross sections is measured to be σ ( p p → Z + c + X ) / σ ( p p → Z + b + X ) = 2.0 ± 0.2 (stat) ± 0.2 (syst) . The Z + c production cross section and the cross section ratio are also measured as a function of the transverse momentum of the Z boson and of the heavy flavour jet. The measurements are compared with theoretical predictions.

Measurement of the Splitting Function in pp and Pb-Pb Collisions at sqrt[s_{NN}]=5.02 TeV

Data from heavy ion collisions suggest that the evolution of a parton shower is modified by interactions with the color charges in the dense partonic medium created in these collisions, but it is not known where in the shower evolution the modifications occur. The momentum ratio of the two leading partons, resolved as subjets, provides information about the parton shower evolution. This substructure observable, known as the splitting function, reflects the process of a parton splitting into two other partons and has been measured for jets with transverse momentum between 140 and 500 GeV, in pp and PbPb collisions at a center-of-mass energy of 5.02 TeV per nucleon pair. In central PbPb collisions, the splitting function indicates a more unbalanced momentum ratio, compared to peripheral PbPb and pp collisions.. The measurements are compared to various predictions from event generators and analytical calculations.

Suppression of Excited ϒ States Relative to the Ground State in Pb-Pb Collisions at sqrt[s]_{NN}=5.02 TeV

The relative yields of ϒ mesons produced in pp and Pb-Pb collisions at sqrt[s_{NN}]=5.02  TeV and reconstructed via the dimuon decay channel are measured using data collected by the CMS experiment. Double ratios are formed by comparing the yields of the excited states, ϒ(2S) and ϒ(3S), to the ground state, ϒ(1S), in both Pb-Pb and pp collisions at the same center-of-mass energy. The double ratios, [ϒ(nS)/ϒ(1S)]_{Pb-Pb}/[ϒ(nS)/ϒ(1S)]_{pp}, are measured to be 0.308±0.055(stat)±0.019(syst) for the ϒ(2S) and less than 0.26 at 95% confidence level for the ϒ(3S). No significant ϒ(3S) signal is found in the Pb-Pb data. The double ratios are studied as a function of collision centrality, as well as ϒ transverse momentum and rapidity. No significant dependencies are observed.

Perioperative safety and hemostatic efficacy of Advate® in patients with hemophilia A in a postmarketing surveillance in Japan

Rurioctocog alfa (recombinant factor VIII: Advate^®) is available for the control of bleeding among patients with hemophilia A in Japan. To evaluate the perioperative safety and hemostatic efficacy of Advate^®, a postmarketing surveillance was conducted in Japanese patients undergoing surgery in a real-world setting. A total of 74 surgical procedures performed in 58 subjects aged 0-75 years, including three females, were studied. A hemostatic efficacy rating of "excellent" or "good" was reported in 73/74 surgical procedures (98.6%). Perioperative bleeding was successfully controlled by Advate^® in five subjects with positive FVIII inhibitors (2.4-9.1 BU/mL). Advate^® was administered at higher initial bolus doses (114-385 IU/kg) and at higher rates by subsequent initial continuous infusion (8.3-15 IU/kg/hour) in the five subjects with inhibitor than in the subjects without inhibitor (n = 47; mean initial bolus dose: 53.4 IU/kg; subsequent mean initial continuous infusion: 3.8 IU/kg/h). Adverse drug reactions were reported in 7/74 (9.5%) procedures, two of which were the development of de novo FVIII inhibitors. Overall, the perioperative use of Advate^® in a real-world setting was found to be safe and effective among Japanese patients with hemophilia A.

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Ferbel T, Galanti M, Garcia-Bellido A, Han J, Hindrichs O, Khukhunaishvili A, Lo KH, Tan P, Verzetti M, Ciesielski R, Agapitos A, Chou JP, Gershtein Y, Gómez Espinosa TA, Halkiadakis E, Heindl M, Hughes E, Kaplan S, Kunnawalkam Elayavalli R, Kyriacou S, Lath A, Nash K, Osherson M, Saka H, Salur S, Schnetzer S, Sheffield D, Somalwar S, Stone R, Thomas S, Thomassen P, Walker M, Delannoy AG, Foerster M, Heideman J, Riley G, Rose K, Spanier S, Thapa K, Bouhali O, Celik A, Dalchenko M, De Mattia M, Delgado A, Dildick S, Eusebi R, Gilmore J, Huang T, Juska E, Kamon T, Mueller R, Pakhotin Y, Patel R, Perloff A, Perniè L, Rathjens D, Safonov A, Tatarinov A, Ulmer KA, Akchurin N, Damgov J, De Guio F, Dragoiu C, Dudero PR, Faulkner J, Gurpinar E, Kunori S, Lamichhane K, Lee SW, Libeiro T, Peltola T, Undleeb S, Volobouev I, Wang Z, Greene S, Gurrola A, Janjam R, Johns W, Maguire C, Melo A, Ni H, Sheldon P, Tuo S, Velkovska J, Xu Q, Arenton MW, Barria P, Cox B, Goodell J, Hirosky R, Ledovskoy A, Li H, Neu C, Sinthuprasith T, Sun X, Wang Y, Wolfe E, Xia F, Clarke C, Harr R, Karchin PE, Sturdy J, Zaleski S, Belknap DA, Buchanan J, Caillol C, Dasu S, Dodd L, Duric S, Gomber B, Grothe M, Herndon M, Hervé A, Klabbers P, Lanaro A, Levine A, Long K, Loveless R, Pierro GA, Polese G, Ruggles T, Savin A, Smith N, Smith WH, Taylor D, Woods N. Study of dijet events with a large rapidity gap between the two leading jets in pp collisions at s = 7 TeV

Events with no charged particles produced between the two leading jets are studied in proton-proton collisions ats = 7 TeV . The jets were required to have transverse momentump T jet > 40 GeV and pseudorapidity1.5 < | η jet | < 4.7 , and to have values of η jet with opposite signs. The data used for this study were collected with the CMS detector during low-luminosity running at the LHC, and correspond to an integrated luminosity of 8pb - 1 . Events with no charged particles withp T > 0.2 GeV in the interval - 1 < η < 1 between the jets are observed in excess of calculations that assume no color-singlet exchange. The fraction of events with such a rapidity gap, amounting to 0.5-1% of the selected dijet sample, is measured as a function of the p T of the second-leading jet and of the rapidity separation between the jets. The data are compared to previous measurements at the Tevatron, and to perturbative quantum chromodynamics calculations based on the Balitsky-Fadin-Kuraev-Lipatov evolution equations, including different models of the non-perturbative gap survival probability.

Development of a Hybrid Artificial Liver using a Polyurethane Foam/Hepatocyte-Spheroid Packed-Bed Module

Primary dog hepatocytes spontaneously formed spheroids in the pores of polyurethane foam (PUF) within 1–2 days of stationary culture. The spheroids, about 100–150 μm in diameter, partly attached to the surface and immobilized inside these pores.

The lidocaine disappearance rate decreased to about 4 μg/105 viable cells/day for 10 days, while in the PUF/spheroid culture the rate was maintained at almost the initial level of 8 μg/105 viable cells/day for 10 days. Then, two scales of PUF packed-bed modules were designed. A small module (PUF volume; 14.5 cm3) was used for in vitro culture to investigate optimum culture conditions, and a large module (PUF volume; 300 cm3) was designed for dog experiments. Hepatocytes inoculated in these modules also formed spheroids and maintained almost the same activity of albumin secretion rate (111 μg/cm3 PUF/day in the small module and 87.7 μg/cm3 PUF/day in the large module). These results indicate that the PUF packed-bed module containing hepatocyte-spheroids is promising as a hybrid artificial liver

Conditions Required for a Hybrid Artificial Liver Support System using a PUF/Hepatocyte-Spheroid Packed-Bed Module and it's use in Dogs with Liver Failure

We studied the effects of a hybrid artificial liver support system we developed on dogs with hepatic failure. The system consisted of a multi-channel polyurethane foam packed-bed culture module, including primary dog hepatocyte spheroids.

Blood ammonia was well metabolized by 20 g hepatocytes, but the other functions such as glucose concentration, total bile acid concentration, and survival time required 30 g hepatocytes to improve conditions. We found that we should use a culture substratum that easily forms spheroids, and that an artificial liver module should be used as soon as possible after spheroid formation by hepatocytes in the module.

Missense mutations in the gene encoding prothrombin corresponding to Arg596 cause antithrombin resistance and thrombomodulin resistance

Antithrombin (AT) and thrombomodulin (TM) play important roles in the process of natural anticoagulation in vivo. Recently, we reported that the prothrombin Yukuhashi mutation (p.Arg596Leu) was associated with AT and TM resistance-related thrombophilia. To assess the AT and TM resistances associated with other missense mutations by single base substitution in the Arg596 codon, we generated recombinant variants (596Gln, 596Trp, 596Gly, and 596Pro) and investigated the effects on AT and TM anticoagulant functions. All variants except 596Pro were secreted in amounts comparable to that of the wild-type but exhibited variable procoagulant activities. After a 30-minute inactivation by AT, the relative residual activity of wild-type thrombin decreased to 15 ± 4.0%, in contrast to values of all variants were maintained at above 80%. The thrombin–AT complex formation, as determined by enzyme-linked immunosorbent assay, was reduced with all tested variants in the presence and absence of heparin. In the presence of soluble TM (sTM), the relative fibrinogen clotting activity of wild-type thrombin decreased to 16 ± 0.12%, whereas that of tested variants was 37%–56%. In a surface plasmon resonance assay, missense Arg596 mutations reduced thrombin–TM affinity to an extent similar to the reduction of fibrinogen clotting inhibition. In the presence of sTM or cultured endothelial-like cells, APC generation was enhanced differently by variant thrombins in a thrombin–TM affinity- dependent manner. These data indicate that prothrombin Arg596 missense mutations lead to AT and TM resistance in the variant thrombins and suggest that prothrombin Arg596 is important for AT- and TM- mediated anticoagulation.

Observation of Correlated Azimuthal Anisotropy Fourier Harmonics in pp and p+Pb Collisions at the LHC

The azimuthal anisotropy Fourier coefficients (v_{n}) in 8.16 TeV p+Pb data are extracted via long-range two-particle correlations as a function of the event multiplicity and compared to corresponding results in pp and PbPb collisions. Using a four-particle cumulant technique, v_{n} correlations are measured for the first time in pp and p+Pb collisions. The v_{2} and v_{4} coefficients are found to be positively correlated in all collision systems. For high-multiplicity p+Pb collisions, an anticorrelation of v_{2} and v_{3} is observed, with a similar correlation strength as in PbPb data at the same multiplicity. The new correlation results strengthen the case for a common origin of the collectivity seen in p+Pb and PbPb collisions in the measured multiplicity range.

Angiotensin receptor blocker irbesartan reduces stress-induced intestinal inflammation via AT1a signaling and ACE2-dependent mechanism in mice

Stress is associated with pathophysiology of both irritable bowel syndrome (IBS) and hypertension. Angiotensin receptor blockers (ARB) have anti-inflammatory properties via inhibition of angiotensin II (Ang II)/Ang II type I receptor axis (AT1). Inhibition of the classical RAS pathway is also involved in upregulation of angiotensin converting enzyme-2 (ACE2), which activates the Ang-(1-7)/Mas pathway to counteract inflammatory signaling and acts as a partner of the amino acid transporter, B⁰AT-1, to absorb tryptophan for regulation of microbiota-gut-brain axis. In this study, we determined the effects of ARB irbesartan on stress-induced intestinal inflammation. C57BL/6J mice were subjected to 2-week intermittent restraint stress. They were orally treated during the stress with either vehicle, 3 or 10 mg/kg/day irbesartan. Restraint stress resulted in colon inflammation with higher histological damage scores, increased expression of Nox4, TLR-4 and IL1-β, accumulation of reactive oxygen species (ROS), and activation of the ACE-angiotensin II-AT1 receptor axis. Stress also downregulated intestinal amino acid transporter, ACE2/B⁰AT-1, and activity of intestinal mammalian target of rapamycin (mTOR) and p70 S6 kinase (p70S6K), resulting in decrease in α-defensins, changes in intestinal microbial contents, and perturbation of tryptophan metabolism with activation of the kynurenine pathway. Administration of irbesartan inhibited activation of stress-induced AT1 pathway to reduce intestinal ROS accumulation and inflammation, restored expression of ACE2/B⁰AT-1, activity of mTOR and p70S6K, dysbiosis and tryptophan metabolism. Our results suggest that AT1 is a potentially suitable therapeutic target in stress-induced intestinal inflammation, and that irbesartan could be beneficially suitable for the treatment of stressed patients with IBS.

Silva CB, Di Francesco A, Faccioli P, Galinhas B, Gallinaro M, Hollar J, Leonardo N, Iglesias LL, Nemallapudi MV, Seixas J, Strong G, Toldaiev O, Vadruccio D, Varela J, Afanasiev S, Bunin P, Gavrilenko M, Golutvin I, Gorbunov I, Kamenev A, Karjavin V, Lanev A, Malakhov A, Matveev V, Palichik V, Perelygin V, Shmatov S, Shulha S, Skatchkov N, Smirnov V, Voytishin N, Zarubin A, Ivanov Y, Kim V, Kuznetsova E, Levchenko P, Murzin V, Oreshkin V, Smirnov I, Sulimov V, Uvarov L, Vavilov S, Vorobyev A, Andreev Y, Dermenev A, Gninenko S, Golubev N, Karneyeu A, Kirsanov M, Krasnikov N, Pashenkov A, Tlisov D, Toropin A, Epshteyn V, Gavrilov V, Lychkovskaya N, Popov V, Pozdnyakov I, Safronov G, Spiridonov A, Stepennov A, Toms M, Vlasov E, Zhokin A, Aushev T, Bylinkin A, Chadeeva M, Parygin P, Philippov D, Polikarpov S, Popova E, Rusinov V, Andreev V, Azarkin M, Dremin I, Kirakosyan M, Terkulov A, Baskakov A, Belyaev A, Boos E, Dubinin M, Dudko L, Ershov A, Gribushin A, Klyukhin V, Kodolova O, Lokhtin I, Miagkov I, Obraztsov S, Petrushanko S, Savrin V, Snigirev A, Blinov V, Skovpen Y, Shtol D, Azhgirey I, Bayshev I, Bitioukov S, Elumakhov D, Kachanov V, Kalinin A, Konstantinov D, Krychkine V, Petrov V, Ryutin R, Sobol A, Troshin S, Tyurin N, Uzunian A, Volkov A, Adzic P, Cirkovic P, Devetak D, Dordevic M, Milosevic J, Rekovic V, Maestre JA, Luna MB, Cerrada M, Colino N, De La Cruz B, Peris AD, Del Valle AE, Bedoya CF, Ramos JPF, Flix J, Fouz MC, Garcia-Abia P, Lopez OG, Lopez SG, Hernandez JM, Josa MI, Yzquierdo APC, Pelayo JP, Olmeda AQ, Redondo I, Romero L, Soares MS, Fernández AÁ, Albajar C, de Trocóniz JF, Missiroli M, Moran D, Cuevas J, Erice C, Menendez JF, Caballero IG, Fernández JRG, Cortezon EP, Cruz SS, Andrés IS, Vischia P, Garcia JMV, Cabrillo IJ, Calderon A, Quero BC, Curras E, Campderros JD, Fernandez M, Garcia-Ferrero J, Gomez G, Virto AL, Marco J, Rivero CM, del Arbol PMR, Matorras F, Gomez JP, Rodrigo T, Ruiz-Jimeno A, Scodellaro L, Trevisani N, Vila I, Cortabitarte RV, Abbaneo D, Auffray E, Baillon P, Ball AH, Barney D, Bianco M, Bloch P, Bocci A, Botta C, Camporesi T, Castello R, Cepeda M, Cerminara G, Chapon E, Chen Y, d’Enterria D, Dabrowski A, Daponte V, David A, De Gruttola M, De Roeck A, Dobson M, Dorney B, du Pree T, Dünser M, Dupont N, Elliott-Peisert A, Everaerts P, Fallavollita F, Franzoni G, Fulcher J, Funk W, Gigi D, Gill K, Glege F, Gulhan D, Harris P, Hegeman J, Innocente V, Janot P, Karacheban O, Kieseler J, Kirschenmann H, Knünz V, Kornmayer A, Kortelainen MJ, Krammer M, Lange C, Lecoq P, Lourenço C, Lucchini MT, Malgeri L, Mannelli M, Martelli A, Meijers F, Merlin JA, Mersi S, Meschi E, Milenovic P, Moortgat F, Mulders M, Neugebauer H, Orfanelli S, Orsini L, Pape L, Perez E, Peruzzi M, Petrilli A, Petrucciani G, Pfeiffer A, Pierini M, Racz A, Reis T, Riva F, Rolandi G, Rovere M, Sakulin H, Schäfer C, Schwick C, Seidel M, Selvaggi M, Sharma A, Silva P, Sphicas P, Stakia A, Steggemann J, Stoye M, Tosi M, Treille D, Triossi A, Tsirou A, Veckalns V, Verweij M, Zeuner WD, Bertl W, Caminada L, Deiters K, Erdmann W, Horisberger R, Ingram Q, Kaestli HC, Kotlinski D, Langenegger U, Rohe T, Wiederkehr SA, Bachmair F, Bäni L, Berger P, Bianchini L, Casal B, Dissertori G, Dittmar M, Donegà M, Grab C, Heidegger C, Hits D, Hoss J, Kasieczka G, Klijnsma T, Lustermann W, Mangano B, Marionneau M, Meinhard MT, Meister D, Micheli F, Musella P, Nessi-Tedaldi F, Pandolfi F, Pata J, Pauss F, Perrin G, Perrozzi L, Quittnat M, Reichmann M, Schönenberger M, Shchutska L, Tavolaro VR, Theofilatos K, Olsson MLV, Wallny R, Zhu DH, Aarrestad TK, Amsler C, Canelli MF, De Cosa A, Del Burgo R, Donato S, Galloni C, Hreus T, Kilminster B, Ngadiuba J, Pinna D, Rauco G, Robmann P, Salerno D, Seitz C, Takahashi Y, Zucchetta A, Candelise V, Doan TH, Jain S, Khurana R, Kuo CM, Lin W, Pozdnyakov A, Yu SS, Kumar A, Chang P, Chao Y, Chen KF, Chen PH, Fiori F, Hou WS, Hsiung Y, Liu YF, Lu RS, Paganis E, Psallidas A, Steen A, Tsai JF, 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Corpe L, Dauncey P, Davies G, De Wit A, Della Negra M, Di Maria R, Elwood A, Haddad Y, Hall G, Iles G, James T, Lane R, Laner C, Lyons L, Magnan AM, Malik S, Mastrolorenzo L, Matsushita T, Nash J, Nikitenko A, Palladino V, Pesaresi M, Raymond DM, Richards A, Rose A, Scott E, Seez C, Shtipliyski A, Summers S, Tapper A, Uchida K, Acosta MV, Virdee T, Wardle N, Winterbottom D, Wright J, Zenz SC, Cole JE, Hobson PR, Khan A, Kyberd P, Reid ID, Symonds P, Teodorescu L, Turner M, Borzou A, Call K, Dittmann J, Hatakeyama K, Liu H, Pastika N, Smith C, Bartek R, Dominguez A, Buccilli A, Cooper SI, Henderson C, Rumerio P, West C, Arcaro D, Avetisyan A, Bose T, Gastler D, Rankin D, Richardson C, Rohlf J, Sulak L, Zou D, Benelli G, Cutts D, Garabedian A, Hakala J, Heintz U, Hogan JM, Kwok KHM, Laird E, Landsberg G, Mao Z, Narain M, Pazzini J, Piperov S, Sagir S, Syarif R, Yu D, Band R, Brainerd C, Burns D, De La Barca Sanchez MC, Chertok M, Conway J, Conway R, Cox PT, Erbacher R, Flores C, Funk G, Gardner M, Ko W, Lander R, Mclean C, Mulhearn M, Pellett D, Pilot J, Shalhout S, Shi M, Smith J, Squires M, Stolp D, Tos K, Tripathi M, Wang Z, Bachtis M, Bravo C, Cousins R, Dasgupta A, Florent A, Hauser J, Ignatenko M, Mccoll N, Saltzberg D, Schnaible C, Valuev V, Bouvier E, Burt K, Clare R, Ellison J, Gary JW, Shirazi SMAG, Hanson G, Heilman J, Jandir P, Kennedy E, Lacroix F, Long OR, Negrete MO, Paneva MI, Shrinivas A, Si W, Wang L, Wei H, Wimpenny S, Yates BR, Branson JG, Cittolin S, Derdzinski M, Gerosa R, Hashemi B, Holzner A, Klein D, Kole G, Krutelyov V, Letts J, Macneill I, Masciovecchio M, Olivito D, Padhi S, Pieri M, Sani M, Sharma V, Simon S, Tadel M, Vartak A, Wasserbaech S, Wood J, Würthwein F, Yagil A, Della Porta GZ, Amin N, Bhandari R, Bradmiller-Feld J, Campagnari C, Dishaw A, Dutta V, Franco Sevilla M, George C, Golf F, Gouskos L, Gran J, Heller R, Incandela J, Mullin SD, Ovcharova A, Qu H, Richman J, Stuart D, Suarez I, Yoo J, Anderson D, Bendavid J, Bornheim A, Lawhorn JM, Newman HB, Nguyen T, Pena C, Spiropulu M, Vlimant JR, Xie S, Zhang Z, Zhu RY, Andrews MB, Ferguson T, Mudholkar T, Paulini M, Russ J, Sun M, Vogel H, Vorobiev I, Weinberg M, Cumalat JP, Ford WT, Jensen F, Johnson A, Krohn M, Leontsinis S, Mulholland T, Stenson K, Wagner SR, Alexander J, Chaves J, Chu J, Dittmer S, Mcdermott K, Mirman N, Patterson JR, Rinkevicius A, Ryd A, Skinnari L, Soffi L, Tan SM, Tao Z, Thom J, Tucker J, Wittich P, Zientek M, Abdullin S, Albrow M, Apollinari G, Apresyan A, Apyan A, Banerjee S, Bauerdick LAT, Beretvas A, Berryhill J, Bhat PC, Bolla G, Burkett K, Butler JN, Canepa A, Cerati GB, Cheung HWK, Chlebana F, Cremonesi M, Duarte J, Elvira VD, Freeman J, Gecse Z, Gottschalk E, Gray L, Green D, Grünendahl S, Gutsche O, Harris RM, Hasegawa S, Hirschauer J, Hu Z, Jayatilaka B, Jindariani S, Johnson M, Joshi U, Klima B, Kreis B, Lammel S, Lincoln D, Lipton R, Liu M, Liu T, De Sá RL, Lykken J, Maeshima K, Magini N, Marraffino JM, Maruyama S, Mason D, McBride P, Merkel P, Mrenna S, Nahn S, O’Dell V, Pedro K, Prokofyev O, Rakness G, Ristori L, Schneider B, Sexton-Kennedy E, Soha A, Spalding WJ, Spiegel L, Stoynev S, Strait J, Strobbe N, Taylor L, Tkaczyk S, Tran NV, Uplegger L, Vaandering EW, Vernieri C, Verzocchi M, Vidal R, Wang M, Weber HA, Whitbeck A, Acosta D, Avery P, Bortignon P, Bourilkov D, Brinkerhoff A, Carnes A, Carver M, Curry D, Field RD, Furic IK, Konigsberg J, Korytov A, Kotov K, Ma P, Matchev K, Mei H, Mitselmakher G, Rank D, Sperka D, Terentyev N, Thomas L, Wang J, Wang S, Yelton J, Joshi YR, Linn S, Markowitz P, Rodriguez JL, Ackert A, Adams T, Askew A, Hagopian S, Hagopian V, Johnson KF, Kolberg T, Martinez G, Perry T, Prosper H, Saha A, Santra A, Sharma V, Yohay R, Baarmand MM, Bhopatkar V, Colafranceschi S, Hohlmann M, Noonan D, Roy T, Yumiceva F, Adams MR, Apanasevich L, Berry D, Betts RR, Cavanaugh R, Chen X, Evdokimov O, Gerber CE, Hangal DA, Hofman DJ, Jung K, Kamin J, Gonzalez IDS, Tonjes MB, Trauger H, Varelas N, Wang H, Wu Z, Zhang J, Bilki B, Clarida W, Dilsiz K, Durgut S, Gandrajula RP, Haytmyradov M, Khristenko V, Merlo JP, Mermerkaya H, Mestvirishvili A, Moeller A, Nachtman J, Ogul H, Onel Y, Ozok F, Penzo A, Snyder C, Tiras E, Wetzel J, Yi K, Blumenfeld B, Cocoros A, Eminizer N, Fehling D, Feng L, Gritsan AV, Maksimovic P, Roskes J, Sarica U, Swartz M, Xiao M, You C, Al-bataineh A, Baringer P, Bean A, Boren S, Bowen J, Castle J, Khalil S, Kropivnitskaya A, Majumder D, Mcbrayer W, Murray M, Royon C, Sanders S, Schmitz E, Stringer R, Takaki JDT, Wang Q, Ivanov A, Kaadze K, Maravin Y, Mohammadi A, Saini LK, Skhirtladze N, Toda S, Rebassoo F, Wright D, Anelli C, Baden A, Baron O, Belloni A, Calvert B, Eno SC, Ferraioli C, Hadley NJ, Jabeen S, Jeng GY, Kellogg RG, Kunkle J, Mignerey AC, Ricci-Tam F, Shin YH, Skuja A, Tonwar SC, Abercrombie D, Allen B, Azzolini V, Barbieri R, Baty A, Bi R, Brandt S, Busza W, Cali IA, D’Alfonso M, Demiragli Z, Ceballos GG, Goncharov M, Hsu D, Iiyama Y, Innocenti GM, Klute M, Kovalskyi D, Lai YS, Lee YJ, Levin A, Luckey PD, Maier B, Marini AC, Mcginn C, Mironov C, Narayanan S, Niu X, Paus C, Roland C, Roland G, Salfeld-Nebgen J, Stephans GSF, Tatar K, Velicanu D, Wang J, Wang TW, Wyslouch B, Benvenuti AC, Chatterjee RM, Evans A, Hansen P, Kalafut S, Kubota Y, Lesko Z, Mans J, Nourbakhsh S, Ruckstuhl N, Rusack R, Turkewitz J, Acosta JG, Oliveros S, Avdeeva E, Bloom K, Claes DR, Fangmeier C, Suarez RG, Kamalieddin R, Kravchenko I, Monroy J, Siado JE, Snow GR, Stieger B, Alyari M, Dolen J, Godshalk A, Harrington C, Iashvili I, Nguyen D, Parker A, Rappoccio S, Roozbahani B, Alverson G, Barberis E, Hortiangtham A, Massironi A, Morse DM, Nash D, Orimoto T, De Lima RT, Trocino D, Wood D, Bhattacharya S, Charaf O, Hahn KA, Mucia N, Odell N, Pollack B, Schmitt MH, Sung K, Trovato M, Velasco M, Dev N, Hildreth M, Anampa KH, Jessop C, Karmgard DJ, Kellams N, Lannon K, Loukas N, Marinelli N, Meng F, Mueller C, Musienko Y, Planer M, Reinsvold A, Ruchti R, Smith G, Taroni S, Wayne M, Wolf M, Woodard A, Alimena J, Antonelli L, Bylsma B, Durkin LS, Flowers S, Francis B, Hart A, Hill C, Ji W, Liu B, Luo W, Puigh D, Winer BL, Wulsin HW, Cooperstein S, Driga O, Elmer P, Hardenbrook J, Hebda P, Higginbotham S, Lange D, Luo J, Marlow D, Mei K, Ojalvo I, Olsen J, Palmer C, Piroué P, Stickland D, Tully C, Malik S, Norberg S, Barker A, Barnes VE, Das S, Folgueras S, Gutay L, Jha MK, Jones M, Jung AW, Khatiwada A, Miller DH, Neumeister N, Peng CC, Schulte JF, Sun J, Wang F, Xie W, Cheng T, Parashar N, Stupak J, Adair A, Akgun B, Chen Z, Ecklund KM, Geurts FJM, Guilbaud M, Li W, Michlin B, Northup M, Padley BP, Roberts J, Rorie J, Tu Z, Zabel J, Bodek A, de Barbaro P, Demina R, Duh YT, Ferbel T, Galanti M, Garcia-Bellido A, Han J, Hindrichs O, Khukhunaishvili A, Lo KH, Tan P, Verzetti M, Ciesielski R, Goulianos K, Mesropian C, Agapitos A, Chou JP, Gershtein Y, Espinosa TAG, Halkiadakis E, Heindl M, Hughes E, Kaplan S, Elayavalli RK, Kyriacou S, Lath A, Montalvo R, Nash K, Osherson M, Saka H, Salur S, Schnetzer S, Sheffield D, Somalwar S, Stone R, Thomas S, Thomassen P, Walker M, Delannoy AG, Foerster M, Heideman J, Riley G, Rose K, Spanier S, Thapa K, Bouhali O, Hernandez AC, Celik A, Dalchenko M, De Mattia M, Delgado A, Dildick S, Eusebi R, Gilmore J, Huang T, Kamon T, Mueller R, Pakhotin Y, Patel R, Perloff A, Perniè L, Rathjens D, Safonov A, Tatarinov A, Ulmer KA, Akchurin N, Damgov J, De Guio F, Dudero PR, Faulkner J, Gurpinar E, Kunori S, Lamichhane K, Lee SW, Libeiro T, Peltola T, Undleeb S, Volobouev I, Wang Z, Greene S, Gurrola A, Janjam R, Johns W, Maguire C, Melo A, Ni H, Sheldon P, Tuo S, Velkovska J, Xu Q, Arenton MW, Barria P, Cox B, Hirosky R, Ledovskoy A, Li H, Neu C, Sinthuprasith T, Wang Y, Wolfe E, Xia F, Harr R, Karchin PE, Sturdy J, Zaleski S, Brodski M, Buchanan J, Caillol C, Dasu S, Dodd L, Duric S, Gomber B, Grothe M, Herndon M, Hervé A, Hussain U, Klabbers P, Lanaro A, Levine A, Long K, Loveless R, Pierro GA, Polese G, Ruggles T, Savin A, Smith N, Smith WH, Taylor D, Woods N. Measurements of the p p → Z Z production cross section and the Z → 4 ℓ branching fraction, and constraints on anomalous triple gauge couplings at s = 13 TeV

Four-lepton production in proton-proton collisions, p p → ( Z / γ ∗ ) ( Z / γ ∗ ) → 4 ℓ , where ℓ = e or μ , is studied at a center-of-mass energy of 13TeV with the CMS detector at the LHC. The data sample corresponds to an integrated luminosity of 35.9fb - 1 . The ZZ production cross section, σ ( p p → Z Z ) = 17.2 ± 0.5 (stat) ± 0.7 (syst) ± 0.4 (theo) ± 0.4 (lumi) pb , measured using events with two opposite-sign, same-flavor lepton pairs produced in the mass region 60 < m ℓ + ℓ - < 120 GeV , is consistent with standard model predictions. Differential cross sections are measured and are well described by the theoretical predictions. The Z boson branching fraction to four leptons is measured to be B ( Z → 4 ℓ ) = 4 . 83 - 0.22 + 0.23 ( s t a t ) - 0.29 + 0.32 ( s y s t ) ± 0.08 ( t h e o ) ± 0.12 ( l u m i ) × 10 - 6 for events with a four-lepton invariant mass in the range 80 < m 4 ℓ < 100 GeV and a dilepton massm ℓ ℓ > 4 GeV for all opposite-sign, same-flavor lepton pairs. The results agree with standard model predictions. The invariant mass distribution of the four-lepton system is used to set limits on anomalous ZZZ and ZZ γ couplings at 95% confidence level: - 0.0012 < f 4 Z < 0.0010 , - 0.0010 < f 5 Z < 0.0013 , - 0.0012 < f 4 γ < 0.0013 , - 0.0012 < f 5 γ < 0.0013 .

Silva CB, Di Francesco A, Faccioli P, Galinhas B, Gallinaro M, Hollar J, Leonardo N, Iglesias LL, Nemallapudi MV, Seixas J, Strong G, Toldaiev O, Vadruccio D, Varela J, Afanasiev S, Bunin P, Gavrilenko M, Golutvin I, Gorbunov I, Kamenev A, Karjavin V, Lanev A, Malakhov A, Matveev V, Palichik V, Perelygin V, Shmatov S, Shulha S, Skatchkov N, Smirnov V, Voytishin N, Zarubin A, Ivanov Y, Kim V, Kuznetsova E, Levchenko P, Murzin V, Oreshkin V, Smirnov I, Sulimov V, Uvarov L, Vavilov S, Vorobyev A, Andreev Y, Dermenev A, Gninenko S, Golubev N, Karneyeu A, Kirsanov M, Krasnikov N, Pashenkov A, Tlisov D, Toropin A, Epshteyn V, Gavrilov V, Lychkovskaya N, Popov V, Pozdnyakov I, Safronov G, Spiridonov A, Stepennov A, Toms M, Vlasov E, Zhokin A, Aushev T, Bylinkin A, Chadeeva M, Parygin P, Philippov D, Polikarpov S, Popova E, Rusinov V, Andreev V, Azarkin M, Dremin I, Kirakosyan M, Terkulov A, Baskakov A, Belyaev A, Boos E, Dubinin M, Dudko L, Ershov A, Gribushin A, Klyukhin V, Kodolova O, Lokhtin I, Miagkov I, Obraztsov S, Petrushanko S, Savrin V, Snigirev A, Blinov V, Skovpen Y, Shtol D, Azhgirey I, Bayshev I, Bitioukov S, Elumakhov D, Kachanov V, Kalinin A, Konstantinov D, Krychkine V, Petrov V, Ryutin R, Sobol A, Troshin S, Tyurin N, Uzunian A, Volkov A, Adzic P, Cirkovic P, Devetak D, Dordevic M, Milosevic J, Rekovic V, Maestre JA, Luna MB, Cerrada M, Colino N, De La Cruz B, Peris AD, Del Valle AE, Bedoya CF, Ramos JPF, Flix J, Fouz MC, Garcia-Abia P, Lopez OG, Lopez SG, Hernandez JM, Josa MI, Yzquierdo APC, Pelayo JP, Olmeda AQ, Redondo I, Romero L, Soares MS, Fernández AÁ, Albajar C, de Trocóniz JF, Missiroli M, Moran D, Cuevas J, Erice C, Menendez JF, Caballero IG, Fernández JRG, Cortezon EP, Cruz SS, Andrés IS, Vischia P, Garcia JMV, Cabrillo IJ, Calderon A, Quero BC, Curras E, Campderros JD, Fernandez M, Garcia-Ferrero J, Gomez G, Virto AL, Marco J, Rivero CM, del Arbol PMR, Matorras F, Gomez JP, Rodrigo T, Ruiz-Jimeno A, Scodellaro L, Trevisani N, Vila I, Cortabitarte RV, Abbaneo D, Auffray E, Baillon P, Ball AH, Barney D, Bianco M, Bloch P, Bocci A, Botta C, Camporesi T, Castello R, Cepeda M, Cerminara G, Chapon E, Chen Y, d’Enterria D, Dabrowski A, Daponte V, David A, De Gruttola M, De Roeck A, Dobson M, Dorney B, du Pree T, Dünser M, Dupont N, Elliott-Peisert A, Everaerts P, Fallavollita F, Franzoni G, Fulcher J, Funk W, Gigi D, Gill K, Glege F, Gulhan D, Harris P, Hegeman J, Innocente V, Janot P, Karacheban O, Kieseler J, Kirschenmann H, Knünz V, Kornmayer A, Kortelainen MJ, Krammer M, Lange C, Lecoq P, Lourenço C, Lucchini MT, Malgeri L, Mannelli M, Martelli A, Meijers F, Merlin JA, Mersi S, Meschi E, Milenovic P, Moortgat F, Mulders M, Neugebauer H, Orfanelli S, Orsini L, Pape L, Perez E, Peruzzi M, Petrilli A, Petrucciani G, Pfeiffer A, Pierini M, Racz A, Reis T, Riva F, Rolandi G, Rovere M, Sakulin H, Schäfer C, Schwick C, Seidel M, Selvaggi M, Sharma A, Silva P, Sphicas P, Stakia A, Steggemann J, Stoye M, Tosi M, Treille D, 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Measurements of the p p → Z Z production cross section and the Z → 4 ℓ branching fraction, and constraints on anomalous triple gauge couplings at s = 13 TeV

Four-lepton production in proton-proton collisions, p p → ( Z / γ ∗ ) ( Z / γ ∗ ) → 4 ℓ , where ℓ = e or μ , is studied at a center-of-mass energy of 13 TeV with the CMS detector at the LHC. The data sample corresponds to an integrated luminosity of 35.9 fb - 1 . The ZZ production cross section, σ ( p p → Z Z ) = 17.2 ± 0.5 (stat) ± 0.7 (syst) ± 0.4 (theo) ± 0.4 (lumi) pb , measured using events with two opposite-sign, same-flavor lepton pairs produced in the mass region 60 < m ℓ + ℓ - < 120 GeV , is consistent with standard model predictions. Differential cross sections are measured and are well described by the theoretical predictions. The Z boson branching fraction to four leptons is measured to be B ( Z → 4 ℓ ) = 4 . 83 - 0.22 + 0.23 ( s t a t ) - 0.29 + 0.32 ( s y s t ) ± 0.08 ( t h e o ) ± 0.12 ( l u m i ) × 10 - 6 for events with a four-lepton invariant mass in the range 80 < m 4 ℓ < 100 GeV and a dilepton mass m ℓ ℓ > 4 GeV for all opposite-sign, same-flavor lepton pairs. The results agree with standard model predictions. The invariant mass distribution of the four-lepton system is used to set limits on anomalous ZZZ and ZZ γ couplings at 95% confidence level: - 0.0012 < f 4 Z < 0.0010 , - 0.0010 < f 5 Z < 0.0013 , - 0.0012 < f 4 γ < 0.0013 , - 0.0012 < f 5 γ < 0.0013 .

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A, Zevi Della Porta G, Amin N, Bhandari R, Bradmiller-Feld J, Campagnari C, Dishaw A, Dutta V, Franco Sevilla M, Gouskos L, Heller R, Incandela J, Ovcharova A, Qu H, Richman J, Stuart D, Suarez I, Yoo J, Anderson D, Bornheim A, Bunn J, Lawhorn JM, Newman HB, Nguyen TQ, Pena C, Spiropulu M, Vlimant JR, Wilkinson R, Xie S, Zhang Z, Zhu RY, Andrews MB, Ferguson T, Mudholkar T, Paulini M, Russ J, Sun M, Vogel H, Vorobiev I, Weinberg M, Cumalat JP, Ford WT, Jensen F, Johnson A, Krohn M, Leontsinis S, Mulholland T, Stenson K, Ulmer KA, Wagner SR, Alexander J, Chaves J, Chu J, Dittmer S, Mcdermott K, Mirman N, Patterson JR, Quach D, Rinkevicius A, Ryd A, Skinnari L, Soffi L, Tan SM, Tao Z, Thom J, Tucker J, Wittich P, Zientek M, Abdullin S, Albrow M, Alyari M, Apollinari G, Apresyan A, Apyan A, Banerjee S, Bauerdick LAT, Beretvas A, Berryhill J, Bhat PC, Bolla G, Burkett K, Butler JN, Canepa A, Cerati GB, Cheung HWK, Chlebana F, Cremonesi M, Duarte J, Elvira VD, Freeman J, Gecse Z, Gottschalk E, Gray L, Green D, Grünendahl S, Gutsche O, Hanlon J, Harris RM, Hasegawa S, Hirschauer J, Hu Z, Jayatilaka B, Jindariani S, Johnson M, Joshi U, Klima B, Kreis B, Lammel S, Lincoln D, Lipton R, Liu M, Liu T, Lopes De Sá R, Lykken J, Maeshima K, Magini N, Marraffino JM, Mason D, McBride P, Merkel P, Mrenna S, Nahn S, O’Dell V, Pedro K, Prokofyev O, Rakness G, Ristori L, Schneider B, Sexton-Kennedy E, Soha A, Spalding WJ, Spiegel L, Stoynev S, Strait J, Strobbe N, Taylor L, Tkaczyk S, Tran NV, Uplegger L, Vaandering EW, Vernieri C, Verzocchi M, Vidal R, Wang M, Weber HA, Whitbeck A, Wu W, Acosta D, Avery P, Bortignon P, Bourilkov D, Brinkerhoff A, Carnes A, Carver M, Curry D, Field RD, Furic IK, Gleyzer SV, Joshi BM, Konigsberg J, Korytov A, Kotov K, Ma P, Matchev K, Mei H, Mitselmakher G, Shi K, Sperka D, Terentyev N, Thomas L, Wang J, Wang S, Yelton J, Joshi YR, Linn S, Markowitz P, Rodriguez JL, Ackert A, Adams T, Askew A, Hagopian S, Hagopian V, Johnson KF, Kolberg T, Martinez G, Perry T, Prosper H, Saha A, Santra A, Sharma V, Yohay R, Baarmand MM, Bhopatkar V, Colafranceschi S, Hohlmann M, Noonan D, Roy T, Yumiceva F, Adams MR, Apanasevich L, Berry D, Betts RR, Cavanaugh R, Chen X, Evdokimov O, Gerber CE, Hangal DA, Hofman DJ, Jung K, Kamin J, Sandoval Gonzalez ID, Tonjes MB, Trauger H, Varelas N, Wang H, Wu Z, Zhang J, Bilki B, Clarida W, Dilsiz K, Durgut S, Gandrajula RP, Haytmyradov M, Khristenko V, Merlo JP, Mermerkaya H, Mestvirishvili A, Moeller A, Nachtman J, Ogul H, Onel Y, Ozok F, Penzo A, Snyder C, Tiras E, Wetzel J, Yi K, Blumenfeld B, Cocoros A, Eminizer N, Fehling D, Feng L, Gritsan AV, Maksimovic P, Roskes J, Sarica U, Swartz M, Xiao M, You C, Al-bataineh A, Baringer P, Bean A, Boren S, Bowen J, Castle J, Khalil S, Kropivnitskaya A, Majumder D, Mcbrayer W, Murray M, Rogan C, Royon C, Sanders S, Schmitz E, Tapia Takaki JD, Wang Q, Ivanov A, Kaadze K, Maravin Y, Mohammadi A, Saini LK, Skhirtladze N, Rebassoo F, Wright D, Baden A, Baron O, Belloni A, Eno SC, Feng Y, Ferraioli C, Hadley NJ, Jabeen S, Jeng GY, Kellogg RG, Kunkle J, Mignerey AC, Ricci-Tam F, Shin YH, Skuja A, Tonwar SC, Abercrombie D, Allen B, Azzolini V, Barbieri R, Baty A, Bauer G, Bi R, Brandt S, Busza W, Cali IA, D’Alfonso M, Demiragli Z, Gomez Ceballos G, Goncharov M, Hsu D, Hu M, Iiyama Y, Innocenti GM, Klute M, Kovalskyi D, Lee YJ, Levin A, Luckey PD, Maier B, Marini AC, Mcginn C, Mironov C, Narayanan S, Niu X, Paus C, Roland C, Roland G, Salfeld-Nebgen J, Stephans GSF, Sumorok K, Tatar K, Velicanu D, Wang J, Wang TW, Wyslouch B, Benvenuti AC, Chatterjee RM, Evans A, Hansen P, Hiltbrand J, Kalafut S, Kubota Y, Lesko Z, Mans J, Nourbakhsh S, Ruckstuhl N, Rusack R, Turkewitz J, Wadud MA, Acosta JG, Oliveros S, Avdeeva E, Bloom K, Claes DR, Fangmeier C, Golf F, Gonzalez Suarez R, Kamalieddin R, Kravchenko I, Monroy J, Siado JE, Snow GR, Stieger B, Dolen J, Godshalk A, Harrington C, Iashvili I, Nguyen D, Parker A, Rappoccio S, Roozbahani B, Alverson G, Barberis E, Freer C, Hortiangtham A, Massironi A, Morse DM, Orimoto T, Teixeira De Lima R, Wamorkar T, Wang B, Wisecarver A, Wood D, Bhattacharya S, Charaf O, Hahn KA, Mucia N, Odell N, Schmitt MH, Sung K, Trovato M, Velasco M, Bucci R, Dev N, Hildreth M, Hurtado Anampa K, Jessop C, Karmgard DJ, Kellams N, Lannon K, Li W, Loukas N, Marinelli N, Meng F, Mueller C, Musienko Y, Planer M, Reinsvold A, Ruchti R, Siddireddy P, Smith G, Taroni S, Wayne M, Wightman A, Wolf M, Woodard A, Alimena J, Antonelli L, Bylsma B, Durkin LS, Flowers S, Francis B, Hart A, Hill C, Ji W, Ling TY, Liu B, Luo W, Winer BL, Wulsin HW, Cooperstein S, Driga O, Elmer P, Hardenbrook J, Hebda P, Higginbotham S, Kalogeropoulos A, Lange D, Luo J, Marlow D, Mei K, Ojalvo I, Olsen J, Palmer C, Piroué P, Stickland D, Tully C, Malik S, Norberg S, Barker A, Barnes VE, Das S, Folgueras S, Gutay L, Jones M, Jung AW, Khatiwada A, Miller DH, Neumeister N, Peng CC, Qiu H, Schulte JF, Sun J, Wang F, Xiao R, Xie W, Cheng T, Parashar N, Stupak J, Chen Z, Ecklund KM, Freed S, Geurts FJM, Guilbaud M, Kilpatrick M, Li W, Michlin B, Padley BP, Roberts J, Rorie J, Shi W, Tu Z, Zabel J, Zhang A, Bodek A, de Barbaro P, Demina R, Duh YT, Ferbel T, Galanti M, Garcia-Bellido A, Han J, Hindrichs O, Khukhunaishvili A, Lo KH, Tan P, Verzetti M, Ciesielski R, Goulianos K, Mesropian C, Agapitos A, Chou JP, Gershtein Y, Gómez Espinosa TA, Halkiadakis E, Heindl M, Hughes E, Kaplan S, Kunnawalkam Elayavalli R, Kyriacou S, Lath A, Montalvo R, Nash K, Osherson M, Saka H, Salur S, Schnetzer S, Sheffield D, Somalwar S, Stone R, Thomas S, Thomassen P, Walker M, Delannoy AG, Heideman J, Riley G, Rose K, Spanier S, Thapa K, Bouhali O, Castaneda Hernandez A, Celik A, Dalchenko M, De Mattia M, Delgado A, Dildick S, Eusebi R, Gilmore J, Huang T, Kamon T, Mueller R, Pakhotin Y, Patel R, Perloff A, Perniè L, Rathjens D, Safonov A, Tatarinov A, Akchurin N, Damgov J, De Guio F, Dudero PR, Faulkner J, Gurpinar E, Kunori S, Lamichhane K, Lee SW, Libeiro T, Mengke T, Muthumuni S, Peltola T, Undleeb S, Volobouev I, Wang Z, Greene S, Gurrola A, Janjam R, Johns W, Maguire C, Melo A, Ni H, Padeken K, Sheldon P, Tuo S, Velkovska J, Xu Q, Arenton MW, Barria P, Cox B, Hirosky R, Joyce M, Ledovskoy A, Li H, Neu C, Sinthuprasith T, Wang Y, Wolfe E, Xia F, Harr R, Karchin PE, Poudyal N, Sturdy J, Thapa P, Zaleski S, Brodski M, Buchanan J, Caillol C, Carlsmith D, Dasu S, Dodd L, Duric S, Gomber B, Grothe M, Herndon M, Hervé A, Hussain U, Klabbers P, Lanaro A, Levine A, Long K, Loveless R, Rekovic V, Ruggles T, Savin A, Smith N, Smith WH, Taylor D, Woods N. Search for standard model production of four top quarks with same-sign and multilepton final states in proton-proton collisions at s = 13 TeV

A search for standard model production of four top quarks ( t t ¯ t t ¯ ) is reported using events containing at least three leptons ( e , μ ) or a same-sign lepton pair. The events are produced in proton-proton collisions at a center-of-mass energy of 13TeV at the LHC, and the data sample, recorded in 2016, corresponds to an integrated luminosity of 35.9fb - 1 . Jet multiplicity and flavor are used to enhance signal sensitivity, and dedicated control regions are used to constrain the dominant backgrounds. The observed and expected signal significances are, respectively, 1.6 and 1.0 standard deviations, and the t t ¯ t t ¯ cross section is measured to be 16 . 9 - 11.4 + 13.8 fb , in agreement with next-to-leading-order standard model predictions. These results are also used to constrain the Yukawa coupling between the top quark and the Higgs boson to be less than 2.1 times its expected standard model value at 95% confidence level.

Vwf K1362A resulted in failure of protein synthesis in mice

Von Willebrand factor (VWF) is synthesized in megakaryocytes and endothelial cells (ECs) and has two main roles: to carry and protect coagulation factor VIII (FVIII) from degradation by forming VWF-FVIII complex; and to mediate platelet adhesion and aggregation at sites of vascular injury. Previous research using the HEK293 cell line revealed that the VWF K1362 mutation interacted directly with platelet glycoprotein Ib (GPIb). Vwf K1362A knock-in (KI) mice were therefore generated to verify the in vivo function of residue 1362 in binding to platelet GPIb. The Cre-loxP system was employed to introduce the Vwf K1362A mutation systemically in mice. In blood coagulation analysis, the VWF antigen (VWF:Ag) of Lys1362Ala KI homozygous (homo) mice was below the sensitivity of detection by enzyme-linked immunosorbent assay. FVIII activities (FVIII:C) were 47.9 ± 0.3 and 3.3 ± 0.3% (K1362A heterozygous (hetero) and K1362A KI homo mice, respectively) compared to wild-type mice. Immunohistochemical staining analysis revealed that VWF protein did not exist in ECs of K1362A KI homo mice. These results indicated that VWF protein synthesis of K1362A was impaired after transcription in mice. K1362 seems to represent a very important position not only for VWF function, but also for VWF synthesis in mice.

Evaluation of the suitability of a plant virus, pepper mild mottle virus, as a surrogate of human enteric viruses for assessment of the efficacy of coagulation-rapid sand filtration to remove those viruses

Here, we evaluated the removal of three representative human enteric viruses - adenovirus (AdV) type 40, coxsackievirus (CV) B5, and hepatitis A virus (HAV) IB - and one surrogate of human caliciviruses - murine norovirus (MNV) type 1 - by coagulation-rapid sand filtration, using water samples from eight water sources for drinking water treatment plants in Japan. The removal ratios of a plant virus (pepper mild mottle virus; PMMoV) and two bacteriophages (MS2 and φX174) were compared with the removal ratios of human enteric viruses to assess the suitability of PMMoV, MS2, and φX174 as surrogates for human enteric viruses. The removal ratios of AdV, CV, HAV, and MNV, evaluated via the real-time polymerase chain reaction (PCR) method, were 0.8-2.5-log₁₀ when commercially available polyaluminum chloride (PACl, basicity 1.5) and virgin silica sand were used as the coagulant and filter medium, respectively. The type of coagulant affected the virus removal efficiency, but the age of silica sand used in the rapid sand filtration did not. Coagulation-rapid sand filtration with non-sulfated, high-basicity PACls (basicity 2.1 or 2.5) removed viruses more efficiently than the other aluminum-based coagulants. The removal ratios of MS2 were sometimes higher than those of the three human enteric viruses and MNV, whereas the removal ratios of φX174 tended to be smaller than those of the three human enteric viruses and MNV. In contrast, the removal ratios of PMMoV were similar to and strongly correlated with those of the three human enteric viruses and MNV. Thus, PMMoV appears to be a suitable surrogate for human enteric viruses for the assessment of the efficacy of coagulation-rapid sand filtration to remove viruses.

Structural and functional insights into S-thiolation of human serum albumins

Human serum albumin (HSA) is the most abundant serum protein, contributing to the maintenance of redox balance in the extracellular fluids. One single free cysteine residue at position 34 is believed to be a target of oxidation. However, the molecular details and functions of oxidized HSAs remain obscure. Here we analyzed serum samples from normal subjects and hyperlipidemia patients and observed an enhanced S-thiolation of HSA in the hyperlipidemia patients as compared to the control individuals. Both cysteine and homocysteine were identified as the low molecular weight thiols bound to the HSAs. Intriguingly, S-thiolations were observed not only at Cys34, but also at multiple cysteine residues in the disulfide bonds of HSA. When the serum albumins from genetically modified mice that exhibit high levels of total homocysteine in serum were analyzed, we observed an enhanced S-homocysteinylation at multiple cysteine residues. In addition, the cysteine residues in the disulfide bonds were also thiolated in recombinant HSA that had been treated with the disulfide molecules. These findings and the result that S-homocysteinylation mediated increased surface hydrophobicity and ligand binding activity of HSA offer new insights into structural and functional alternation of serum albumins via S-thiolation.

Observation of Top Quark Production in Proton-Nucleus Collisions

The first observation of top quark production in proton-nucleus collisions is reported using proton-lead data collected by the CMS experiment at the CERN LHC at a nucleon-nucleon center-of-mass energy of sqrt[s_{NN}]=8.16  TeV. The measurement is performed using events with exactly one isolated electron or muon candidate and at least four jets. The data sample corresponds to an integrated luminosity of 174  nb^{-1}. The significance of the tt[over ¯] signal against the background-only hypothesis is above 5 standard deviations. The measured cross section is σ_{tt[over ¯]}=45±8  nb, consistent with predictions from perturbative quantum chromodynamics.

Plasma Levels of Syndecan-4 (Ryudocan) Are Elevated in Patients with Acute Myocardial Infarction

Syndecan-4 (ryudocan) is a cell-surface heparan sulfate proteoglycan, which plays an important role in a variety of biological functions including regulation of blood coagulation, cell adhesion, and cell growth. In this study, we measured plasma levels of syndecan-4 in patients with acute myocardial infarction using an enzyme-immunoassay, and found that they were extremely high, with a peak of average (10.5 ± 5.6 ng/ml, 2 weeks after onset), as compared with those in normal subjects (0.078 ± 0.030 ng/ml) (p < 0.001). We also observed a distinct expression of syndecan-4 in the repair region of the damaged cardiac tissues with infarction, but not in intact region, by immunohistochemical analysis. To clarify the mechanism of syndecan-4 induction, we investigated the hypoxia effect on its expression, and found that hypoxia treatment up-regulated the gene expression of syndecan-4 in various types of cells. Taken together, it is suggested that syndecan-4 is induced by hypoxia stimuli in ischemic heart tissues, and may function as a tissue-repair molecule via biological mediators such as heparin-binding growth factors.

Severe Factor VII Deficiency Caused by a Novel Mutation His348 to Gln in the Catalytic Domain

Factor VII is a vitamin K-dependent zymogen that plays a key role in the initiation of the extrinsic pathway. A severe factor VII deficiency was identified in a 45-year old male whose plasma factor VII antigen was less than 60 ng/ml and expressed 5.2% of normal factor VII activity. DNA sequence analysis of the patient’s factor VII gene showed a thymidine to guanine transversion at nucleotide 10968 in exon VIII that results in a novel amino acid substitution of His348 to Gln. The patient was homozygous for this mutation, whereas some of his family members were heterozygous. Both wild type and mutant factor VII were transiently expressed in COS-1 cells. The level of secreted mutant factor VII antigen was only 11.0% of the level of wild type factor VII. In CHO cells stably transfected with the mutant factor VII, only 37.3% of the total labeled FVII was secreted into the conditioned media and the remainder was retained inside the cells. These data suggest this mutation leads to factor VII deficiency due to the impaired secretion of the molecule.

Search for dark matter produced in association with heavy-flavor quark pairs in proton-proton collisions at s = 13 TeV

A search is presented for an excess of events with heavy-flavor quark pairs ( t t ¯ and b b ¯ ) and a large imbalance in transverse momentum in data from proton-proton collisions at a center-of-mass energy of 13TeV . The data correspond to an integrated luminosity of 2.2fb - 1 collected with the CMS detector at the CERN LHC. No deviations are observed with respect to standard model predictions. The results are used in the first interpretation of dark matter production in t t ¯ and b b ¯ final states in a simplified model. This analysis is also the first to perform a statistical combination of searches for dark matter produced with different heavy-flavor final states. The combination provides exclusions that are stronger than those achieved with individual heavy-flavor final states.

Search for Evidence of the Type-III Seesaw Mechanism in Multilepton Final States in Proton-Proton Collisions at sqrt[s]=13 TeV

A search for a signal consistent with the type-III seesaw mechanism in events with three or more electrons or muons is presented. The data sample consists of proton-proton collisions at sqrt[s]=13  TeV collected by the CMS experiment at the LHC in 2016 and corresponds to an integrated luminosity of 35.9  fb^{-1}. Selection criteria based on the number of leptons and the invariant mass of oppositely charged lepton pairs are used to distinguish the signal from the standard model background. The observations are consistent with the expectations from standard model processes. The results are used to place limits on the production of heavy fermions of the type-III seesaw model as a function of the branching ratio to each lepton flavor. In the scenario of equal branching fractions to each lepton flavor, heavy fermions with masses below 840 GeV are excluded. This is the most sensitive probe to date of the type-III seesaw mechanism.

Efficacy of Early Fusion With Local Bone Graft and Platelet-Rich Plasma in Lumbar Spinal Fusion Surgery Followed Over 10 Years

STUDY DESIGN

Prospective clinical study.

OBJECTIVE

Many oral surgeons use platelet-rich plasma (PRP) for bone defects, but the efficacy of PRP for spinal arthrodesis remains uncertain. The objective was to compare the efficacy of autologous local bone graft and PRP with local bone graft alone for promotion of bony union in posterolateral lumbar fusion (PLF) surgery, with investigation of the safety of PRP over 10 years.

METHODS

A prospective study was conducted in 29 consecutive patients who underwent one-level PLF at L4/5 for degenerative lumbar disease. Local bone on the left (control) side and local bone with PRP on the right side were grafted. The fusion area and absorption of grafted bone at 58 regions were determined using computed tomography at 2 weeks and 3, 6, and 12 months after surgery.

RESULTS

Average bone fusion areas on the PRP side were significantly wider at 3 and 6 months after surgery (P < .05). Average absorption values were significantly lower on the PRP side than on the control side at 3 and 6 months after surgery (P < .05). The PRP/control ratio was significantly different at 3 and 6 months compared to that at 2 weeks (P < .005). No adverse events related to PRP occurred with good clinical outcome over 10 years follow-up.

CONCLUSIONS

Local application of PRP combined with autologous local bone graft has a positive impact on early fusion for lumbar arthrodesis with no adverse events over 10 years, and thus is a safe and low cost autologous option in spinal fusion.

Correction to: Efficacy and safety of full-length pegylated recombinant factor VIII with extended half-life in previously treated patients with hemophilia A: comparison of data between the general and Japanese study populations

The authors would like to correct the error in Table 2 in the original publication of the article. The "Blood type" is not described in any part of "Results" and "Discussion" and had no impact on the conclusion hence the bottom of the table is removed.