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Ahn JK, Beckford B, Campbell M, Chen SH, Comfort J, Dona K, Farrington MS, Hanai K, Hara N, Haraguchi H, Hsiung YB, Hutcheson M, Inagaki T, Isoe M, Kamiji I, Kato T, Kim EJ, Kim JL, Kim HM, Komatsubara TK, Kotera K, Lee SK, Lee JW, Lim GY, Lin QS, Lin C, Luo Y, Mari T, Masuda T, Matsumura T, Mcfarland D, McNeal N, Miyazaki K, Murayama R, Nakagiri K, Nanjo H, Nishimiya H, Noichi Y, Nomura T, Nunes T, Ohsugi M, Okuno H, Redeker JC, Sanchez J, Sasaki M, Sasao N, Sato T, Sato K, Sato Y, Shimizu N, Shimogawa T, Shinkawa T, Shinohara S, Shiomi K, Shiraishi R, Su S, Sugiyama Y, Suzuki S, Tajima Y, Taylor M, Tecchio M, Togawa M, Toyoda T, Tung YC, Vuong QH, Wah YW, Watanabe H, Yamanaka T, Yoshida HY, Zaidenberg L. Study of the K_{L}→π^{0}νν[over ¯] Decay at the J-PARC KOTO Experiment. Phys Rev Lett 2021; 126:121801. [PMID: 33834796 DOI: 10.1103/physrevlett.126.121801] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Accepted: 02/18/2021] [Indexed: 06/12/2023]
Abstract
The rare decay K_{L}→π^{0}νν[over ¯] was studied with the dataset taken at the J-PARC KOTO experiment in 2016, 2017, and 2018. With a single event sensitivity of (7.20±0.05_{stat}±0.66_{syst})×10^{-10}, three candidate events were observed in the signal region. After unveiling them, contaminations from K^{±} and scattered K_{L} decays were studied, and the total number of background events was estimated to be 1.22±0.26. We conclude that the number of observed events is statistically consistent with the background expectation. For this dataset, we set an upper limit of 4.9×10^{-9} on the branching fraction of K_{L}→π^{0}νν[over ¯] at the 90% confidence level.
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Affiliation(s)
- J K Ahn
- Department of Physics, Korea University, Seoul 02841, Republic of Korea
| | - B Beckford
- Department of Physics, University of Michigan, Ann Arbor, Michigan 48109, USA
| | - M Campbell
- Department of Physics, University of Michigan, Ann Arbor, Michigan 48109, USA
| | - S H Chen
- Department of Physics, National Taiwan University, Taipei, Taiwan 10617, Republic of China
| | - J Comfort
- Department of Physics, Arizona State University, Tempe, Arizona 85287, USA
| | - K Dona
- Department of Physics, University of Michigan, Ann Arbor, Michigan 48109, USA
| | - M S Farrington
- Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637, USA
| | - K Hanai
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - N Hara
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - H Haraguchi
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - Y B Hsiung
- Department of Physics, National Taiwan University, Taipei, Taiwan 10617, Republic of China
| | - M Hutcheson
- Department of Physics, University of Michigan, Ann Arbor, Michigan 48109, USA
| | - T Inagaki
- Institute of Particle and Nuclear Studies, High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
| | - M Isoe
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - I Kamiji
- Department of Physics, Kyoto University, Kyoto 606-8502, Japan
| | - T Kato
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - E J Kim
- Division of Science Education, Jeonbuk National University, Jeonju 54896, Republic of Korea
| | - J L Kim
- Division of Science Education, Jeonbuk National University, Jeonju 54896, Republic of Korea
| | - H M Kim
- Division of Science Education, Jeonbuk National University, Jeonju 54896, Republic of Korea
| | - T K Komatsubara
- Institute of Particle and Nuclear Studies, High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
- J-PARC Center, Tokai, Ibaraki 319-1195, Japan
| | - K Kotera
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - S K Lee
- Division of Science Education, Jeonbuk National University, Jeonju 54896, Republic of Korea
| | - J W Lee
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - G Y Lim
- Institute of Particle and Nuclear Studies, High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
- J-PARC Center, Tokai, Ibaraki 319-1195, Japan
| | - Q S Lin
- Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637, USA
| | - C Lin
- Department of Physics, National Taiwan University, Taipei, Taiwan 10617, Republic of China
| | - Y Luo
- Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637, USA
| | - T Mari
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - T Masuda
- Research Institute for Interdisciplinary Science, Okayama University, Okayama 700-8530, Japan
| | - T Matsumura
- Department of Applied Physics, National Defense Academy, Kanagawa 239-8686, Japan
| | - D Mcfarland
- Department of Physics, Arizona State University, Tempe, Arizona 85287, USA
| | - N McNeal
- Department of Physics, University of Michigan, Ann Arbor, Michigan 48109, USA
| | - K Miyazaki
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - R Murayama
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - K Nakagiri
- Department of Physics, Kyoto University, Kyoto 606-8502, Japan
| | - H Nanjo
- Department of Physics, Kyoto University, Kyoto 606-8502, Japan
| | - H Nishimiya
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - Y Noichi
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - T Nomura
- Institute of Particle and Nuclear Studies, High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
- J-PARC Center, Tokai, Ibaraki 319-1195, Japan
| | - T Nunes
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - M Ohsugi
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - H Okuno
- Institute of Particle and Nuclear Studies, High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
| | - J C Redeker
- Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637, USA
| | - J Sanchez
- Department of Physics, University of Michigan, Ann Arbor, Michigan 48109, USA
| | - M Sasaki
- Department of Physics, Yamagata University, Yamagata 990-8560, Japan
| | - N Sasao
- Research Institute for Interdisciplinary Science, Okayama University, Okayama 700-8530, Japan
| | - T Sato
- Institute of Particle and Nuclear Studies, High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
| | - K Sato
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - Y Sato
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - N Shimizu
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - T Shimogawa
- Department of Physics, Saga University, Saga 840-8502, Japan
| | - T Shinkawa
- Department of Applied Physics, National Defense Academy, Kanagawa 239-8686, Japan
| | - S Shinohara
- Department of Physics, Kyoto University, Kyoto 606-8502, Japan
| | - K Shiomi
- Institute of Particle and Nuclear Studies, High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
- J-PARC Center, Tokai, Ibaraki 319-1195, Japan
| | - R Shiraishi
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - S Su
- Department of Physics, University of Michigan, Ann Arbor, Michigan 48109, USA
| | - Y Sugiyama
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - S Suzuki
- Department of Physics, Saga University, Saga 840-8502, Japan
| | - Y Tajima
- Department of Physics, Yamagata University, Yamagata 990-8560, Japan
| | - M Taylor
- Department of Physics, University of Michigan, Ann Arbor, Michigan 48109, USA
| | - M Tecchio
- Department of Physics, University of Michigan, Ann Arbor, Michigan 48109, USA
| | - M Togawa
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - T Toyoda
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - Y-C Tung
- Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637, USA
| | - Q H Vuong
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - Y W Wah
- Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637, USA
| | - H Watanabe
- Institute of Particle and Nuclear Studies, High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
- J-PARC Center, Tokai, Ibaraki 319-1195, Japan
| | - T Yamanaka
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - H Y Yoshida
- Department of Physics, Yamagata University, Yamagata 990-8560, Japan
| | - L Zaidenberg
- Department of Physics, University of Michigan, Ann Arbor, Michigan 48109, USA
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Aguilar-Arevalo A, Aoki M, Blecher M, Britton D, vom Bruch D, Bryman D, Chen S, Comfort J, Cuen-Rochin S, Doria L, Gumplinger P, Hussein A, Igarashi Y, Ito S, Kettell S, Kurchaninov L, Littenberg L, Malbrunot C, Mischke R, Numao T, Protopopescu D, Sher A, Sullivan T, Vavilov D. Search for three body pion decays
π+→l+νX. Int J Clin Exp Med 2021. [DOI: 10.1103/physrevd.103.052006] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Ahn JK, Beckford B, Beechert J, Bryant K, Campbell M, Chen SH, Comfort J, Dona K, Hara N, Haraguchi H, Hsiung YB, Hutcheson M, Inagaki T, Kamiji I, Kawasaki N, Kim EJ, Kim JL, Kim YJ, Ko JW, Komatsubara TK, Kotera K, Kurilin AS, Lee JW, Lim GY, Lin C, Lin Q, Luo Y, Ma J, Maeda Y, Mari T, Masuda T, Matsumura T, Mcfarland D, McNeal N, Micallef J, Miyazaki K, Murayama R, Naito D, Nakagiri K, Nanjo H, Nishimiya H, Nomura T, Ohsugi M, Okuno H, Sasaki M, Sasao N, Sato K, Sato T, Sato Y, Schamis H, Seki S, Shimizu N, Shimogawa T, Shinkawa T, Shinohara S, Shiomi K, Su S, Sugiyama Y, Suzuki S, Tajima Y, Taylor M, Tecchio M, Togawa M, Tung YC, Wah YW, Watanabe H, Woo JK, Yamanaka T, Yoshida HY. Search for K_{L}→π^{0}νν[over ¯] and K_{L}→π^{0}X^{0} Decays at the J-PARC KOTO Experiment. Phys Rev Lett 2019; 122:021802. [PMID: 30720307 DOI: 10.1103/physrevlett.122.021802] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2018] [Revised: 12/14/2018] [Indexed: 06/09/2023]
Abstract
A search for the rare decay K_{L}→π^{0}νν[over ¯] was performed. With the data collected in 2015, corresponding to 2.2×10^{19} protons on target, a single event sensitivity of (1.30±0.01_{stat}±0.14_{syst})×10^{-9} was achieved and no candidate events were observed. We set an upper limit of 3.0×10^{-9} for the branching fraction of K_{L}→π^{0}νν[over ¯] at the 90% confidence level (C.L.), which improved the previous limit by almost an order of magnitude. An upper limit for K_{L}→π^{0}X^{0} was also set as 2.4×10^{-9} at the 90% C.L., where X^{0} is an invisible boson with a mass of 135 MeV/c^{2}.
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Affiliation(s)
- J K Ahn
- Department of Physics, Korea University, Seoul 02841, Republic of Korea
| | - B Beckford
- Department of Physics, University of Michigan, Ann Arbor, Michigan 48109, USA
| | - J Beechert
- Department of Physics, University of Michigan, Ann Arbor, Michigan 48109, USA
| | - K Bryant
- Department of Physics, University of Michigan, Ann Arbor, Michigan 48109, USA
| | - M Campbell
- Department of Physics, University of Michigan, Ann Arbor, Michigan 48109, USA
| | - S H Chen
- Department of Physics, National Taiwan University, Taipei, Taiwan 10617, Republic of China
| | - J Comfort
- Department of Physics, Arizona State University, Tempe, Arizona 85287, USA
| | - K Dona
- Department of Physics, University of Michigan, Ann Arbor, Michigan 48109, USA
| | - N Hara
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - H Haraguchi
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - Y B Hsiung
- Department of Physics, National Taiwan University, Taipei, Taiwan 10617, Republic of China
| | - M Hutcheson
- Department of Physics, University of Michigan, Ann Arbor, Michigan 48109, USA
| | - T Inagaki
- Institute of Particle and Nuclear Studies, High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
| | - I Kamiji
- Department of Physics, Kyoto University, Kyoto 606-8502, Japan
| | - N Kawasaki
- Department of Physics, Kyoto University, Kyoto 606-8502, Japan
| | - E J Kim
- Division of Science Education, Chonbuk National University, Jeonju 54896, Republic of Korea
| | - J L Kim
- Department of Physics, Korea University, Seoul 02841, Republic of Korea
| | - Y J Kim
- Department of Physics, Jeju National University, Jeju 63243, Republic of Korea
| | - J W Ko
- Department of Physics, Jeju National University, Jeju 63243, Republic of Korea
| | - T K Komatsubara
- Institute of Particle and Nuclear Studies, High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
- J-PARC Center, Tokai, Ibaraki 319-1195, Japan
| | - K Kotera
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - A S Kurilin
- Laboratory of Nuclear Problems, Joint Institute for Nuclear Researches, Dubna, Moscow region 141980, Russia
| | - J W Lee
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - G Y Lim
- Institute of Particle and Nuclear Studies, High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
- J-PARC Center, Tokai, Ibaraki 319-1195, Japan
| | - C Lin
- Department of Physics, National Taiwan University, Taipei, Taiwan 10617, Republic of China
| | - Q Lin
- Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637, USA
| | - Y Luo
- Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637, USA
| | - J Ma
- Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637, USA
| | - Y Maeda
- Department of Physics, Kyoto University, Kyoto 606-8502, Japan
| | - T Mari
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - T Masuda
- Department of Physics, Kyoto University, Kyoto 606-8502, Japan
| | - T Matsumura
- Department of Applied Physics, National Defense Academy, Kanagawa 239-8686, Japan
| | - D Mcfarland
- Department of Physics, Arizona State University, Tempe, Arizona 85287, USA
| | - N McNeal
- Department of Physics, University of Michigan, Ann Arbor, Michigan 48109, USA
| | - J Micallef
- Department of Physics, University of Michigan, Ann Arbor, Michigan 48109, USA
| | - K Miyazaki
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - R Murayama
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - D Naito
- Department of Physics, Kyoto University, Kyoto 606-8502, Japan
| | - K Nakagiri
- Department of Physics, Kyoto University, Kyoto 606-8502, Japan
| | - H Nanjo
- Department of Physics, Kyoto University, Kyoto 606-8502, Japan
| | - H Nishimiya
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - T Nomura
- Institute of Particle and Nuclear Studies, High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
- J-PARC Center, Tokai, Ibaraki 319-1195, Japan
| | - M Ohsugi
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - H Okuno
- Institute of Particle and Nuclear Studies, High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
| | - M Sasaki
- Department of Physics, Yamagata University, Yamagata 990-8560, Japan
| | - N Sasao
- Research Institute for Interdisciplinary Science, Okayama University, Okayama 700-8530, Japan
| | - K Sato
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - T Sato
- Institute of Particle and Nuclear Studies, High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
| | - Y Sato
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - H Schamis
- Department of Physics, University of Michigan, Ann Arbor, Michigan 48109, USA
| | - S Seki
- Department of Physics, Kyoto University, Kyoto 606-8502, Japan
| | - N Shimizu
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - T Shimogawa
- Department of Physics, Saga University, Saga 840-8502, Japan
| | - T Shinkawa
- Department of Applied Physics, National Defense Academy, Kanagawa 239-8686, Japan
| | - S Shinohara
- Department of Physics, Kyoto University, Kyoto 606-8502, Japan
| | - K Shiomi
- Institute of Particle and Nuclear Studies, High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
- J-PARC Center, Tokai, Ibaraki 319-1195, Japan
| | - S Su
- Department of Physics, University of Michigan, Ann Arbor, Michigan 48109, USA
| | - Y Sugiyama
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - S Suzuki
- Department of Physics, Saga University, Saga 840-8502, Japan
| | - Y Tajima
- Department of Physics, Yamagata University, Yamagata 990-8560, Japan
| | - M Taylor
- Department of Physics, University of Michigan, Ann Arbor, Michigan 48109, USA
| | - M Tecchio
- Department of Physics, University of Michigan, Ann Arbor, Michigan 48109, USA
| | - M Togawa
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - Y C Tung
- Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637, USA
| | - Y W Wah
- Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637, USA
| | - H Watanabe
- Institute of Particle and Nuclear Studies, High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
- J-PARC Center, Tokai, Ibaraki 319-1195, Japan
| | - J K Woo
- Department of Physics, Jeju National University, Jeju 63243, Republic of Korea
| | - T Yamanaka
- Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - H Y Yoshida
- Department of Physics, Yamagata University, Yamagata 990-8560, Japan
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Aguilar-Arevalo A, Aoki M, Blecher M, Britton D, vom Bruch D, Bryman D, Chen S, Comfort J, Cuen-Rochin S, Doria L, Gumplinger P, Hussein A, Igarashi Y, Ito S, Kettell S, Kurchaninov L, Littenberg L, Malbrunot C, Mischke R, Numao T, Protopopescu D, Sher A, Sullivan T, Vavilov D. Improved search for heavy neutrinos in the decay
π→eν. Int J Clin Exp Med 2018. [DOI: 10.1103/physrevd.97.072012] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Hildebrand J, Maycock B, Comfort J, Burns S, Adams E, Howat P. Ethical considerations in investigating youth alcohol norms and behaviours: a case for mature minor consent. Health Promot J Austr 2015; 26:241-245. [DOI: 10.1071/he14101] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2014] [Accepted: 07/29/2015] [Indexed: 11/23/2022] Open
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Aguilar-Arevalo A, Aoki M, Blecher M, Britton DI, Bryman DA, Vom Bruch D, Chen S, Comfort J, Ding M, Doria L, Cuen-Rochin S, Gumplinger P, Hussein A, Igarashi Y, Ito S, Kettell SH, Kurchaninov L, Littenberg LS, Malbrunot C, Mischke RE, Numao T, Protopopescu D, Sher A, Sullivan T, Vavilov D, Yamada K. Improved Measurement of the π→eν Branching Ratio. Phys Rev Lett 2015; 115:071801. [PMID: 26317713 DOI: 10.1103/physrevlett.115.071801] [Citation(s) in RCA: 5] [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: 06/08/2015] [Indexed: 06/04/2023]
Abstract
A new measurement of the branching ratio R_{e/μ}=Γ(π^{+}→e^{+}ν+π^{+}→e^{+}νγ)/Γ(π^{+}→μ^{+}ν+π^{+}→μ^{+}νγ) resulted in R_{e/μ}^{exp}=[1.2344±0.0023(stat)±0.0019(syst)]×10^{-4}. This is in agreement with the standard model prediction and improves the test of electron-muon universality to the level of 0.1%.
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Affiliation(s)
- A Aguilar-Arevalo
- Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de Mexico, Distrito Federal 04510 México
| | - M Aoki
- Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - M Blecher
- Physics Department, Virginia Tech, Blacksburg, Virginia 24061, USA
| | - D I Britton
- Physics Department, University of Glasgow, Glasgow G12 8QQ, United Kingdom
| | - D A Bryman
- Department of Physics and Astronomy, University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada
| | - D Vom Bruch
- Department of Physics and Astronomy, University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada
| | - S Chen
- Department of Engineering Physics, Tsinghua University, Beijing 100084, People's Republic of China
| | - J Comfort
- Physics Department, Arizona State University, Tempe, Arizona 85287, USA
| | - M Ding
- Department of Engineering Physics, Tsinghua University, Beijing 100084, People's Republic of China
| | - L Doria
- TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada
| | - S Cuen-Rochin
- Department of Physics and Astronomy, University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada
| | - P Gumplinger
- TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada
| | - A Hussein
- University of Northern British Columbia, Prince George, British Columbia V2N 4Z9, Canada
| | - Y Igarashi
- KEK, 1-1 Oho, Tsukuba-shi, Ibaraki 305-0801, Japan
| | - S Ito
- Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - S H Kettell
- Brookhaven National Laboratory, Upton, New York 11973-5000, USA
| | - L Kurchaninov
- TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada
| | - L S Littenberg
- Brookhaven National Laboratory, Upton, New York 11973-5000, USA
| | - C Malbrunot
- Department of Physics and Astronomy, University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada
| | - R E Mischke
- TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada
| | - T Numao
- TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada
| | - D Protopopescu
- Physics Department, University of Glasgow, Glasgow G12 8QQ, United Kingdom
| | - A Sher
- TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada
| | - T Sullivan
- Department of Physics and Astronomy, University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada
| | - D Vavilov
- TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada
| | - K Yamada
- Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan
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Horner B, McManus A, Comfort J, Freijah R, Lovelock G, Hunter M, Tavener M. How prepared is the retirement and residential aged care sector in Western Australia for older non-heterosexual people? Qual Prim Care 2012; 20:263-274. [PMID: 23113911] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
OBJECTIVE To explore attitudes, knowledge and current practices of retirement and residential aged care providers in Western Australia towards accommodating older gay, lesbian, bisexual, transgender and intersex (GLBTI) individuals. GLBTI is used throughout as a general term to include people who are not exclusively heterosexual in identity, attraction and/or behaviour. METHODS Postal surveys were sent to 329 providers of accommodation to ask about their attitudes, knowledge and current practices towards older GLBTI people. Two focus groups were also held with managers of accommodation facilities and GLBTI community members. RESULTS Few respondents reported having experience with any older GLBTI residents in their retirement or residential aged care facility. There was poor inclusion of GLBTI issues in policy frameworks, and limited understanding regarding same-sex law reforms. CONCLUSION Older non-heterosexual people are often obscured within ageing population discourses, and conceal their identity for fear of discrimination. GLBTI-sensitive practices can help to facilitate the disclosure of sexual orientation and/or gender identity that may assist in meeting the unique needs of this group.
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Affiliation(s)
- Barbara Horner
- Centre for Research on Ageing, Curtin University, Australia.
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Ogata R, Suzuki S, Ahn JK, Akune Y, Baranov V, Chen KF, Comfort J, Doroshenko M, Fujioka Y, Hsiung YB, Inagaki T, Ishibashi S, Ishihara N, Ishii H, Iwai E, Iwata T, Kato I, Kobayashi S, Komatsu S, Komatsubara TK, Kurilin AS, Kuzmin E, Lednev A, Lee HS, Lee SY, Lim GY, Ma J, Matsumura T, Moisseenko A, Morii H, Morimoto T, Nakajima Y, Nakano T, Nanjo H, Nishi N, Nix J, Nomura T, Nomachi M, Okuno H, Omata K, Perdue GN, Perov S, Podolsky S, Porokhovoy S, Sakashita K, Sasaki T, Sasao N, Sato H, Sato T, Sekimoto M, Shimogawa T, Shinkawa T, Stepanenko Y, Sugaya Y, Sugiyama A, Sumida T, Tajima Y, Takita S, Tsamalaidze Z, Tsukamoto T, Tung YC, Wah YW, Watanabe H, Wu ML, Yamaga M, Yamanaka T, Yoshida HY, Yoshimura Y, Zheng Y. Study of theKL0→π0π0νν¯decay. Int J Clin Exp Med 2011. [DOI: 10.1103/physrevd.84.052009] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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9
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Tung YC, Hsiung YB, Ahn JK, Akune Y, Baranov V, Chen KF, Comfort J, Doroshenko M, Fujioka Y, Inagaki T, Ishibashi S, Ishihara N, Ishii H, Iwai E, Iwata T, Kato I, Kobayashi S, Komatsu S, Komatsubara TK, Kurilin AS, Kuzmin E, Lednev A, Lee HS, Lee SY, Lim GY, Ma J, Matsumura T, Moisseenko A, Morii H, Morimoto T, Nakajima Y, Nakano T, Nanjo H, Nishi N, Nix J, Nomura T, Nomachi M, Ogata R, Okuno H, Omata K, Perdue GN, Perov S, Podolsky S, Porokhovoy S, Sakashita K, Sasaki T, Sasao N, Sato H, Sato T, Sekimoto M, Shimogawa T, Shinkawa T, Stepanenko Y, Sugaya Y, Sugiyama A, Sumida T, Suzuki S, Tajima Y, Takita S, Tsamalaidze Z, Tsukamoto T, Wah Y, Watanabe H, Wu ML, Yamaga M, Yamanaka T, Yoshida HY, Yoshimura Y, Zheng Y. Search for the decayKL0→3γ. Int J Clin Exp Med 2011. [DOI: 10.1103/physrevd.83.031101] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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10
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Ahn JK, Akune Y, Baranov V, Chen KF, Comfort J, Doroshenko M, Fujioka Y, Hsiung YB, Inagaki T, Ishibashi S, Ishihara N, Ishii H, Iwai E, Iwata T, Kato I, Kobayashi S, Komatsu S, Komatsubara TK, Kurilin AS, Kuzmin E, Lednev A, Lee HS, Lee SY, Lim GY, Ma J, Matsumura T, Moisseenko A, Morii H, Morimoto T, Nakajima Y, Nakano T, Nanjo H, Nishi N, Nix J, Nomura T, Nomachi M, Ogata R, Okuno H, Omata K, Perdue GN, Perov S, Podolsky S, Porokhovoy S, Sakashita K, Sasaki T, Sasao N, Sato H, Sato T, Sekimoto M, Shimogawa T, Shinkawa T, Stepanenko Y, Sugaya Y, Sugiyama A, Sumida T, Suzuki S, Tajima Y, Takita S, Tsamalaidze Z, Tsukamoto T, Tung YC, Wah YW, Watanabe H, Wu ML, Yamaga M, Yamanaka T, Yoshida HY, Yoshimura Y, Zheng Y. Experimental study of the decayKL0→π0νν¯. Int J Clin Exp Med 2010. [DOI: 10.1103/physrevd.81.072004] [Citation(s) in RCA: 78] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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11
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Tung YC, Hsiung YB, Wu ML, Chen KF, Ahn JK, Akune Y, Baranov V, Comfort J, Doroshenko M, Fujioka Y, Inagaki T, Ishibashi S, Ishihara N, Ishii H, Iwai E, Iwata T, Kato I, Kobayashi S, Komatsubara TK, Kurilin AS, Kuzmin E, Lednev A, Lee HS, Lee SY, Lim GY, Ma J, Matsumura T, Moisseenko A, Morii H, Morimoto T, Nakano T, Nanjo H, Nix J, Nomura T, Nomachi M, Ogata R, Okuno H, Omata K, Perdue GN, Podolsky S, Sakashita K, Sasaki T, Sasao N, Sato H, Sato T, Sekimoto M, Shinkawa T, Sugaya Y, Sugiyama A, Sumida T, Suzuki S, Tajima Y, Takita S, Tsamalaidze Z, Tsukamoto T, Wah Y, Watanabe H, Yamaga M, Yamanaka T, Yoshida HY, Yoshimura Y, Zheng Y. Search for a light pseudoscalar particle in the decay K_{L};{0}-->pi;{0}pi;{0}X. Phys Rev Lett 2009; 102:051802. [PMID: 19257503 DOI: 10.1103/physrevlett.102.051802] [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: 10/24/2008] [Indexed: 05/27/2023]
Abstract
We performed a search for a light pseudoscalar particle X in the decay K_{L};{0}-->pi;{0}pi;{0}X, X-->gammagamma with the E391a detector at KEK. Such a particle with a mass of 214.3 MeV/c;{2} was suggested by the HyperCP experiment. We found no evidence for X and set an upper limit on the product branching ratio for K_{L};{0}-->pi;{0}pi;{0}X, X-->gammagamma of 2.4x10;{-7} at the 90% confidence level. Upper limits on the branching ratios in the mass region of X from 194.3 to 219.3 MeV/c;{2} are also presented.
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Affiliation(s)
- Y C Tung
- Department of Physics, National Taiwan University, Taipei, Taiwan
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12
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Ahn JK, Akune Y, Baranov V, Chen KF, Comfort J, Doroshenko M, Fujioka Y, Hsiung YB, Inagaki T, Ishibashi S, Ishihara N, Ishii H, Iwai E, Iwata T, Kato I, Kobayashi S, Komatsubara TK, Kurilin AS, Kuzmin E, Lednev A, Lee HS, Lee SY, Lim GY, Ma J, Matsumura T, Moisseenko A, Morii H, Morimoto T, Nakano T, Nanjo H, Nix J, Nomura T, Nomachi M, Okuno H, Omata K, Perdue GN, Podolsky S, Sakashita K, Sasaki T, Sasao N, Sato H, Sato T, Sekimoto M, Shinkawa T, Sugaya Y, Sugiyama A, Sumida T, Suzuki S, Tajima Y, Takita S, Tsamalaidze Z, Tsukamoto T, Tung YC, Wah YW, Watanabe H, Wu ML, Yamaga M, Yamanaka T, Yoshida HY, Yoshimura Y. Search for the Decay K L0-->pi0nu nu[over]. Phys Rev Lett 2008; 100:201802. [PMID: 18518524 DOI: 10.1103/physrevlett.100.201802] [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: 12/26/2007] [Indexed: 05/26/2023]
Abstract
We performed a search for the K L0-->pi0nu nu[over] decay at the KEK 12-GeV proton synchrotron. No candidate events were observed. An upper limit on the branching ratio for the decay was set to be 6.7 x 10(-8) at the 90% confidence level.
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Affiliation(s)
- J K Ahn
- Department of Physics, Pusan National University, Busan 609-735, Republic of Korea
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Zhou ZL, Chen J, Soong SB, Young A, Jiang X, Alarcon R, Arenhövel H, Bernstein A, Bertozzi W, Comfort J, Dodson G, Dolfini S, Dooley A, Dow K, Farkhondeh M, Gilad S, Hicks R, Hotta A, Joo K, Kaloskamis NI, Karabarbounis A, Kowalski S, Kunz C, Margaziotis DJ, Mertz C, Miller M, Miskimen R, Miura T, Miyase H, Papanicolas CN, Peterson G, Ramirez A, Rowntree D, Sarty AJ, Shaw J, Suda T, Tamae T, Tieger D, Tjon JA, Tschalaer C, Tsentalovich E, Turchinetz W, Vellidis CE, Warren GA, Weinstein LB, Williamson S, Zhao J, Zwart T. Relativistic effects and two-body currents in (H)((-->)e(')p)n using out-of-plane detection. Phys Rev Lett 2001; 87:172301. [PMID: 11690266 DOI: 10.1103/physrevlett.87.172301] [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: 05/14/2001] [Indexed: 05/23/2023]
Abstract
Measurements of the (2)H((-->)e,e(')p)n reaction were performed with the out-of-plane magnetic spectrometers (OOPS) at the MIT-Bates Linear Accelerator. The longitudinal-transverse, f(LT) and f(')(LT), and the transverse-transverse, f(TT), interference responses at a missing momentum of 210 MeV/c were simultaneously extracted in the dip region at Q2 = 0.15 (GeV/c)(2). In comparison to models of deuteron electrodisintegration, the data clearly reveal strong effects of relativity and final-state interactions and the importance of two-body meson-exchange currents and isobar configurations. We demonstrate that such effects can be disentangled by extracting these responses using the novel out-of-plane technique.
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Affiliation(s)
- Z L Zhou
- Laboratory for Nuclear Science, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
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14
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Ferro-Luzzi M, Bouwhuis M, Passchier E, Zhou Z, Alarcon R, Anghinolfi M, Botto T, Buchholz M, Bulten HJ, Choi S, Comfort J, Dolfini S, Ent R, Gaulard C, Higinbotham D, Konstantinov E, Lang J, Miller MA, Nikolenko D, Nooren GJ, Papadakis N, Passchier I, Poolman HR, Popov SG, Rachek I, Ripani M, Six E, Steijger JJ, Taiuti M, Unal O, Vodanis N. Measurement of Tensor Analyzing Powers for Elastic Electron Scattering from a Polarized 2H Target Internal to a Storage Ring. Phys Rev Lett 1996; 77:2630-2633. [PMID: 10062006 DOI: 10.1103/physrevlett.77.2630] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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15
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Dolfini S, Alarcon R, Arenhövel H, Beck R, Bernstein A, Bertozzi W, Boeglin W, Cardman L, Comfort J, Dale D, Dodson G, Dow K, Epstein M, Farkhondeh M, Gilad S, Görgen J, Holtrop M, Jordan D, Kim W, Kowalski S, Laszewski R, Mandeville J, Margaziotis D, Martinez D, McIlvain T, Miskimen R, Papanicolas C, Tieger D, Turchinetz W, Weinstein L, Williamson S. Out-of-plane quasielastic scattering from deuterium using polarized electrons. Phys Rev C Nucl Phys 1995; 51:3479-3482. [PMID: 9970453 DOI: 10.1103/physrevc.51.3479] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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16
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Mandeville J, Alarcon R, Beck R, Bernstein A, Bertozzi W, Boeglin W, Boffi S, Cardman L, Comfort J, Dale D, Dodson G, Dolfini S, Dow K, Epstein M, Gilad S, Görgen J, Holtrop M, Jordan D, Kim W, Kowalski S, Laszewski R, Margaziotis D, Martinez D, McIlvain T, Miskimen R, Papanicolas C, Radici M, Tieger D, Turchinetz W, Weinstein L, Williamson S. First Measurement of the Imaginary Part of the Transverse-Longitudinal Nuclear Response. Phys Rev Lett 1994; 72:3325-3328. [PMID: 10056169 DOI: 10.1103/physrevlett.72.3325] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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17
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Hoffmann GW, Barlett ML, Kielhorn W, Pauletta G, Purcell M, Ray L, Amann JF, Jarmer JJ, Jones KW, Penttilä S, Tanaka N, Burleson G, Faucett J, Gilani M, Kyle G, Stevens L, Mack AM, Mihailidis D, Averett T, Comfort J, Görgen J, Tinsley J. Spin correlation measurements for p. Phys Rev C Nucl Phys 1994; 49:630-632. [PMID: 9969267 DOI: 10.1103/physrevc.49.630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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18
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Hoffmann GW, Barlett ML, Kielhorn W, Pauletta G, Purcell M, Ray L, Amann JF, Jarmer JJ, Jones KW, Penttilä S, Tanaka N, Burleson G, Faucett J, Gilani M, Kyle G, Stevens L, Mack AM, Mihailidis D, Averett T, Comfort J, Görgen J, Tinsley J, Clark BC, Hama S, Mercer RL. Polarized-proton elastic scattering from polarized 13C. Phys Rev Lett 1990; 65:3096-3099. [PMID: 10042780 DOI: 10.1103/physrevlett.65.3096] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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