Study of two-photon decays of pseudoscalar mesons via j/psi radiative 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, J. Z.1; Bai, Y.42; Bakina, O.27 |
| 刊名 | Physical review d
 |
| 出版日期 | 2018-04-26 |
| 卷号 | 97期号:7页码:9 |
| ISSN号 | 2470-0010 |
| DOI | 10.1103/physrevd.97.072014 |
| 通讯作者 | Ablikim, m.() |
| 英文摘要 | Using a sample of 4.48 x 10(8) psi(3686) events collected with the besiii detector at the bepcii collider, we study the two-photon decays of the pseudoscalar mesons pi(0,) eta , eta' , eta(1405), eta(1475), eta(1760), and x(1835) in j/psi radiative decays using psi(3686) -> pi(+) pi(-) j/psi events. the pi(0), eta, and eta' mesons are clearly observed in the two-photon mass spectra, and the branching fractions are determined to be b(j/psi -> gamma pi(0) -> 3 gamma) = (3.57 +/- 0.12 +/- 0.16) x 10(-5), b(j/psi -> gamma eta -> 3 gamma) = (4.42 +/- 0.04 +/- 0.18) x 10(-4), and b(j/psi -> gamma eta' -> 2 gamma) = (1.26 +/- 0.02 +/- 0.05) x 10(-4), where the first error is statistical and the second is systematic. no clear signal for eta(1405), eta(1475), eta(1760) or x(1835) is observed in the two- photon mass spectra, and upper limits at the 90% confidence level on the product branching fractions are obtained. |
| WOS关键词 | PARTIAL-WAVE ANALYSIS |
| 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:000430909600001 |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2177618 |
| 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,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. Study of two-photon decays of pseudoscalar mesons via j/psi radiative decays[J]. Physical review d,2018,97(7):9. |
| APA | Ablikim, M..,Achasov, M. N..,Ahmed, S..,Albrecht, M..,Amoroso, A..,...&Zou, J. H..(2018).Study of two-photon decays of pseudoscalar mesons via j/psi radiative decays.Physical review d,97(7),9. |
| MLA | Ablikim, M.,et al."Study of two-photon decays of pseudoscalar mesons via j/psi radiative decays".Physical review d 97.7(2018):9. |
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