Measurements of the absolute branching fractions for d-s(+) -> eta e(+)nu(e) and d-s(+) -> eta ' e(+)nu(e)
文献类型：期刊论文
| 作者 | Ablikim, M.; Achasov, M. N.9,68; Ahmed, S.14; Ai, X. C.; Albayrak, O.5; Albrecht, M.4; Ambrose, D. J.51; Amoroso, A.53,56,58,63; An, F. F.1; An, Q.53,63,64 |
| 刊名 | Physical review d
 |
| 出版日期 | 2016-12-06 |
| 卷号 | 94期号:11页码:10 |
| ISSN号 | 2470-0010 |
| DOI | 10.1103/physrevd.94.112003 |
| 通讯作者 | Guo, r. p.(guorp@ihep.ac.cn) |
| 英文摘要 | By analyzing 482 pb(-1) of e(+)e(-) collision data collected at root s = 4.009 gev with the besiii detector at the bepcii collider, we measure the absolute branching fractions for the semileptonic decays d-s(+) -> eta e(+)nu(e) and d-s(+) -> eta ' e(+)nu(e) to be b(d-s(+) -> eta e(+)nu(e)) = (2.30 +/- 0.31 +/- 0.08)% and b(d-s(+) -> eta ' e(+)nu(e)) = (0.93 +/- 0.30 +/- 0.05)%, respectively, and their ratio b(d-s(+) -> eta ' e(+)nu(e)) / b(d-s(+) -> eta ' e(+)nu(e)) = 0.40 +/- 0.14 +/- 0.02, where the first uncertainties are statistical and the second ones are systematic. the results are in good agreement with previous measurements within uncertainties; they can be used to determine the eta-eta' mixing angle and improve upon the d-s(+) semileptonic branching ratio precision. |
| WOS关键词 | FORM-FACTORS ; DECAYS ; HEAVY |
| WOS研究方向 | Astronomy & Astrophysics ; Physics |
| WOS类目 | Astronomy & Astrophysics ; Physics, Particles & Fields |
| 语种 | 英语 |
| 出版者 | AMER PHYSICAL SOC |
| WOS记录号 | WOS:000389505100001 |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2176614 |
| 专题 | 高能物理研究所 |
| 通讯作者 | Guo, R. P. |
| 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.Ruhr Univ Bochum, D-44780 Bochum, Germany 5.Carnegie Mellon Univ, Pittsburgh, PA 15213 USA 6.Cent China Normal Univ, Wuhan 430079, 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.RAS, BINP, SB, GI Budker Inst Nucl Phys, 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. Measurements of the absolute branching fractions for d-s(+) -> eta e(+)nu(e) and d-s(+) -> eta ' e(+)nu(e)[J]. Physical review d,2016,94(11):10. |
| APA | Ablikim, M..,Achasov, M. N..,Ahmed, S..,Ai, X. C..,Albayrak, O..,...&Zou, J. H..(2016).Measurements of the absolute branching fractions for d-s(+) -> eta e(+)nu(e) and d-s(+) -> eta ' e(+)nu(e).Physical review d,94(11),10. |
| MLA | Ablikim, M.,et al."Measurements of the absolute branching fractions for d-s(+) -> eta e(+)nu(e) and d-s(+) -> eta ' e(+)nu(e)".Physical review d 94.11(2016):10. |
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