Measurement of the phase between strong and electromagnetic amplitudes of j/psi decays
文献类型：期刊论文
| 作者 | Ablikim, M.1; Achasov, M. N.9,69; Ahmed, S.14; Albrecht, M.4; Amoroso, A.59,61; An, F. F.1; An, Q.43,56; Bai, Y.42; Bakina, O.27; Ferroli, R. Baldini20 |
| 刊名 | Physics letters b
 |
| 出版日期 | 2019-04-10 |
| 卷号 | 791页码:375-384 |
| ISSN号 | 0370-2693 |
| 关键词 | Phase Strong amplitude Electromagnetic amplitude J/psi decay Besiii |
| DOI | 10.1016/j.physletb.2019.03.001 |
| 通讯作者 | Wang, y. d.(yadiwang@uni-mainz.de) |
| 英文摘要 | Using 16 energy points of e(+) e(-) annihilation data collected in the vicinity of the j/psi resonance with the besiii detector and with a total integrated luminosity of around 100 pb(-1), we study the relative phase between the strong and electromagnetic amplitudes of j/psi decays. the relative phase between j/psi electromagnetic decay and the continuum process (e(+) e(-) annihilation without the j/psi resonance) is confirmed to be zero by studying the cross section lineshape of mu(+) mu(-) production. the relative phase between j/psi strong and electromagnetic decays is then measured to be (84.9 +/- 3.6)degrees or (-84.7 +/- 3.1)degrees for the 2(pi(+) pi(-) )pi(0) final state by investigating the interference pattern between the j/psi decay and the continuum process. this is the first measurement of the relative phase between j/psi strong and electromagnetic decays into a multihadron final state using the lineshape of the production cross section. we also study the production lineshape of the multihadron final state eta pi(+) pi(-) with eta -> pi(+) pi(-) pi(0) , which provides additional information about the phase between the j/psi electromagnetic decay amplitude and the continuum process. additionally, the branching fraction of j/psi -> 2(pi(+) pi(-) )pi(0) is measured to be (4.73 +/- 0.44)% or (4.85 +/- 0.45)%, and the branching fraction of j/psi -> eta pi(+) pi(-) is measured to be (3.78 +/- 0.68) x 10(-4). both of them are consistent with the world average values. the quoted uncertainties include both statistical and systematic uncertainties, which are mainly caused by the low statistics. (c) 2019 the author. published by elsevier b.v. |
| WOS关键词 | VECTOR ; ANNIHILATION ; EXPLANATION ; PSI |
| 资助项目 | German Research Foundation DFG###6340 ; Swedish Research Council###777 ; Ministry of Science and Technology of China on the joined China-Italian project[2015DFG02380] ; National Key Basic Research Program of China[2015CB856700] ; National Key Basic Research Program of China[2015NSFC11375206] ; National Natural Science Foundation of China (NSFC)[11235011] ; National Natural Science Foundation of China (NSFC)[11335008] ; National Natural Science Foundation of China (NSFC)[11425524] ; National Natural Science Foundation of China (NSFC)[11625523] ; National Natural Science Foundation of China (NSFC)[11635010] ; National Natural Science Foundation of China (NSFC)[11505034] ; National Natural Science Foundation of China (NSFC)[11575077] ; Chinese Academy of Sciences (CAS) Large-Scale Scientific Facility Program ; CAS Center for Excellence in Particle Physics (CCEPP) ; Joint Large-Scale Scientific Facility Funds of the NSFC ; CAS[U1332201] ; CAS[U1532257] ; CAS[U1532258] ; CAS[KJCX2-YW-N29] ; CAS[KJCX2-YW-N45] ; CAS Key Research Program of Frontier Sciences[QYZDJ-SSW-SLH003] ; CAS Key Research Program of Frontier Sciences[QYZDJ-SSW-SLH040] ; 100 Talents Program of CAS; National 1000 Talents Program of China ; Shanghai Key Laboratory for Particle Physics and Cosmology ; German Research Foundation DFG ; Collaborative Research Center[CRC 1044] ; Collaborative Research Center[FOR 2359] ; Istituto Nazionale di Fisica Nucleare, Italy ; Koninklijke Nederlandse Akademie van Wetenschappen (KNAW)[530-4CDP03] ; Ministry of Development of Turkey[DPT2006K-120470] ; National Science and Technology fund ; Swedish Research Council ; U.S. Department of Energy[DE-FG02-05ER41374] ; U.S. Department of Energy[DE-SC-0010118] ; U.S. Department of Energy[DE-SC-0010504] ; U.S. Department of Energy[DE-SC-0012069] ; University of Groningen (RuG) ; Helmholtzzentrum fuer Schwerionenforschung GmbH (GSI), Darmstadt ; WCU Program of National Research Foundation of Korea |
| WOS研究方向 | Astronomy & Astrophysics ; Physics |
| WOS类目 | Astronomy & Astrophysics ; Physics, Nuclear ; Physics, Particles & Fields |
| 语种 | 英语 |
| 出版者 | ELSEVIER SCIENCE BV |
| WOS记录号 | WOS:000462321800054 |
| 资助机构 | Ministry of Science and Technology of China on the joined China-Italian project ; National Key Basic Research Program of China ; National Natural Science Foundation of China (NSFC) ; Chinese Academy of Sciences (CAS) Large-Scale Scientific Facility Program ; CAS Center for Excellence in Particle Physics (CCEPP) ; Joint Large-Scale Scientific Facility Funds of the NSFC ; CAS ; CAS Key Research Program of Frontier Sciences ; 100 Talents Program of CAS; National 1000 Talents Program of China ; Shanghai Key Laboratory for Particle Physics and Cosmology ; German Research Foundation DFG ; Collaborative Research Center ; Istituto Nazionale di Fisica Nucleare, Italy ; Koninklijke Nederlandse Akademie van Wetenschappen (KNAW) ; Ministry of Development of Turkey ; National Science and Technology fund ; Swedish Research Council ; U.S. Department of Energy ; University of Groningen (RuG) ; Helmholtzzentrum fuer Schwerionenforschung GmbH (GSI), Darmstadt ; WCU Program of National Research Foundation of Korea |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2160499 |
| 专题 | 高能物理研究所 |
| 通讯作者 | Wang, Y. D. |
| 作者单位 | 1.Inst High Energy Phys, Beijing 100049, Peoples R China 2.Beihang Univ, Beijing 100191, Peoples R China 3.Beijing Inst Petrochem Technol, Beijing 102617, Peoples R China 4.Bochum Ruhr Univ, D-44780 Bochum, Germany 5.Carnegie Mellon Univ, Pittsburgh, PA 15213 USA 6.Cent China Normal Univ, Wuhan 430079, Hubei, Peoples R China 7.China Ctr Adv Sci & Technol, Beijing 100190, Peoples R China 8.COMSATS Inst Informat Technol, Def Rd,Off Raiwind Rd, Lahore 54000, Pakistan 9.GI Budker Inst Nucl Phys SB RAS, BINP, Novosibirsk 630090, Russia 10.GSI Helmholtzctr Heavy Ion Res GmbH, D-64291 Darmstadt, Germany |
| 推荐引用方式 GB/T 7714 | Ablikim, M.,Achasov, M. N.,Ahmed, S.,et al. Measurement of the phase between strong and electromagnetic amplitudes of j/psi decays[J]. Physics letters b,2019,791:375-384. |
| APA | Ablikim, M..,Achasov, M. N..,Ahmed, S..,Albrecht, M..,Amoroso, A..,...&Zou, J. H..(2019).Measurement of the phase between strong and electromagnetic amplitudes of j/psi decays.Physics letters b,791,375-384. |
| MLA | Ablikim, M.,et al."Measurement of the phase between strong and electromagnetic amplitudes of j/psi decays".Physics letters b 791(2019):375-384. |
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