Observation of eta ' -> omega e(+)e(-)
文献类型：期刊论文
| 作者 | Ablikim, M.1; Achasov, M. N.9,66; Ai, X. C.1; Albayrak, O.5; Albrecht, M.4; Ambrose, D. J.49; Amoroso, A.54,56; An, F. F.1; An, Q.51,61; Bai, J. Z.1 |
| 刊名 | Physical review d
 |
| 出版日期 | 2015-09-14 |
| 卷号 | 92期号:5页码:8 |
| ISSN号 | 1550-7998 |
| DOI | 10.1103/physrevd.92.051101 |
| 通讯作者 | Ablikim, m.() |
| 英文摘要 | Based on a sample of eta' mesons produced in the radiative decay j/psi -> gamma eta' in 1.31 x 10(9) j/psi events collected with the besiii detector, the decay eta' -> omega e(+)e(-) is observed for the first time, with a statistical significance of 8 sigma. the branching fraction is measured to be b(eta' -> omega e(+)e(-)) = (1.97 +/- 0.34(stat) +/- 0.17(syst)) x 10(-4), which is in agreement with theoretical predictions. the branching fraction of eta' -> omega gamma is also measured to be (2.55 +/- 0.03(stat) +/- 0.16(syst)) x 10(-2), which is the most precise measurement to date, and the relative branching fraction b(eta' -> omega e(+)e(-))/b(eta' -> omega gamma) is determined to be (7.71 +/- 1.34(stat) +/- 0.54(syst)) x 10(-3). |
| 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:000361119300001 |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2176402 |
| 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.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, 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.,Ai, X. C.,et al. Observation of eta ' -> omega e(+)e(-)[J]. Physical review d,2015,92(5):8. |
| APA | Ablikim, M..,Achasov, M. N..,Ai, X. C..,Albayrak, O..,Albrecht, M..,...&Zou, J. H..(2015).Observation of eta ' -> omega e(+)e(-).Physical review d,92(5),8. |
| MLA | Ablikim, M.,et al."Observation of eta ' -> omega e(+)e(-)".Physical review d 92.5(2015):8. |
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来源：高能物理研究所
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