Measurement of the dynamics of the decays d-s(+ )-> eta(('))e(+)nu(e)
文献类型：期刊论文
| 作者 | Ablikim, M.1; Achasov, M. N.10,72; Ahmed, S.15; Albrecht, M.4; Alekseev, M.61,63; Amoroso, A.61,63; An, F. F.1; An, Q.45,58; Bai, J. Z.1; Bai, Y.44 |
| 刊名 | Physical review letters
 |
| 出版日期 | 2019-03-25 |
| 卷号 | 122期号:11页码:9 |
| ISSN号 | 0031-9007 |
| DOI | 10.1103/physrevlett.122.121801 |
| 通讯作者 | Ablikim, m.() |
| 英文摘要 | Using e(+)e(-) annihilation data corresponding to an integrated luminosity of 3.19 fb(-1) collected at a center-of-mass energy of 4.178 gev with the besiii detector, we measure the absolute branching fractions bds+->eta e+nu e = (2.323 +/- 0.063(stat) +/- 0.063(syst))% and bds+->eta'e+nu e = (0.824 +/- 0.073(stat) +/- 0.027(syst))% via a tagged analysis technique, where one d-s is fully reconstructed in a hadronic mode. combining these measurements with previous besiii measurements of b-d+->eta(')e+(nu e),the eta - eta' mixing angle in the quark flavor basis is determined to be phi(p) = (40.1 +/- 2.1(stat) +/- 0.7(syst))degrees. from the first measurements of the dynamics of ds+ -> eta(')e(+)nu(e) decays, the products of the hadronic form factors f(+)(eta('))(0) and the cabibbo-kobayashi-maskawa matrix element vertical bar v-cs vertical bar are determined with different form factor parametrizations. for the two-parameter series expansion, the results are f(+)(eta) (0) vertical bar v-cs vertical bar = 0.4455 +/- 0.0053(stat) +/- 0.0044(syst) and f(+)(eta)' (0) vertical bar v-cs vertical bar and = 0.477 +/- 0.049(stat) +/- 0.011(syst). |
| 资助项目 | Swedish Research Council###777 ; National Key Basic Research Program of China[2015CB856700] ; 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)[11735014] ; Chinese Academy of Sciences (CAS) Large-Scale Scientific Facility Program ; CAS Center for Excellence in Particle Physics (CCEPP) ; NSFC[U1632109] ; NSFC[U1532257] ; NSFC[U1532258] ; NSFC[U1732263] ; CAS[U1632109] ; CAS[U1532257] ; CAS[U1532258] ; CAS[U1732263] ; 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 ; Shanghai Key Laboratory for Particle Physics and Cosmology ; German Research Foundation DFG[CRC 1044] ; German Research Foundation DFG[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 ; INPAC |
| WOS研究方向 | Physics |
| WOS类目 | Physics, Multidisciplinary |
| 语种 | 英语 |
| 出版者 | AMER PHYSICAL SOC |
| WOS记录号 | WOS:000462933300001 |
| 资助机构 | 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) ; NSFC ; CAS ; CAS Key Research Program of Frontier Sciences ; 100 Talents Program of CAS ; Shanghai Key Laboratory for Particle Physics and Cosmology ; German Research Foundation DFG ; 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 ; INPAC |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2160755 |
| 专题 | 高能物理研究所 |
| 通讯作者 | Ablikim, M. |
| 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.Fudan Univ, Shanghai 200443, Peoples R China 10.GI Budker Inst Nucl Phys SB RAS BINP, Novosibirsk 630090, Russia |
| 推荐引用方式 GB/T 7714 | Ablikim, M.,Achasov, M. N.,Ahmed, S.,et al. Measurement of the dynamics of the decays d-s(+ )-> eta(('))e(+)nu(e)[J]. Physical review letters,2019,122(11):9. |
| APA | Ablikim, M..,Achasov, M. N..,Ahmed, S..,Albrecht, M..,Alekseev, M..,...&Zou, J. H..(2019).Measurement of the dynamics of the decays d-s(+ )-> eta(('))e(+)nu(e).Physical review letters,122(11),9. |
| MLA | Ablikim, M.,et al."Measurement of the dynamics of the decays d-s(+ )-> eta(('))e(+)nu(e)".Physical review letters 122.11(2019):9. |
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