Observation of the doubly radiative decay eta ' -> gamma gamma pi(0)
文献类型：期刊论文
| 作者 | Ablikim, M.1; Achasov, M. N.9,67; Ahmed, S.14; Ai, X. C.1; Albayrak, O.5; Albrecht, M.4; Ambrose, D. J.52; Amoroso, A.57,59; An, F. F.1; An, Q.41,42,54 |
| 刊名 | Physical review d
 |
| 出版日期 | 2017-07-26 |
| 卷号 | 96期号:1页码:8 |
| ISSN号 | 2470-0010 |
| DOI | 10.1103/physrevd.96.012005 |
| 通讯作者 | Ablikim, m.() |
| 英文摘要 | Based on a sample of 1.31 billion j/psi events collected with the besiii detector, we report the study of the doubly radiative decay eta' -> gamma gamma pi(0) for the first time, where the eta' meson is produced via the j/psi -> gamma eta' decay. the branching fraction of eta' -> gamma gamma pi(0) inclusive decay is measured to be b(eta' -> gamma gamma pi(0))(incl) = (3.20 +/- 0.07(stat) +/- 0.23(sys)) x 10(-3), while the branching fractions of the dominant process eta' -> gamma omega and the non-resonant component are determined to be b(eta' -> gamma omega) x b(omega -> gamma pi(0)) = (23.7 +/- 1.4(stat) +/- 1.8(sys)) x 10(-4) and b(eta' -> gamma gamma pi(0))(nr) = (6.16 +/- 0.64(stat) +/- 0.67(sys)) x 10(-4), respectively. in addition, the m-gamma gamma(2)-dependent partial widths of the inclusive decay are also presented. |
| WOS关键词 | CHIRAL PERTURBATION-THEORY ; ANOMALOUS WARD IDENTITIES ; AMPLITUDES |
| WOS研究方向 | Astronomy & Astrophysics ; Physics |
| WOS类目 | Astronomy & Astrophysics ; Physics, Particles & Fields |
| 语种 | 英语 |
| WOS记录号 | WOS:000406546700001 |
| 出版者 | AMER PHYSICAL SOC |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2176965 |
| 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.Belhang Univ, Beijing 100191, Peoples R China 3.Beijing Inst Petrochem Technol, Beijing 102617, Peoples R China 4.Bochum Ruhr Univers, 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,Raiwind Rd, Lahore 54000, Pakistan 9.RAS, GI Budker Inst Nucl Phys, SB, Novosibirsk 630090, Russia 10.GSI Heimiroltzctr 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. Observation of the doubly radiative decay eta ' -> gamma gamma pi(0)[J]. Physical review d,2017,96(1):8. |
| APA | Ablikim, M..,Achasov, M. N..,Ahmed, S..,Ai, X. C..,Albayrak, O..,...&Zou, J. H..(2017).Observation of the doubly radiative decay eta ' -> gamma gamma pi(0).Physical review d,96(1),8. |
| MLA | Ablikim, M.,et al."Observation of the doubly radiative decay eta ' -> gamma gamma pi(0)".Physical review d 96.1(2017):8. |
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