Study of j/psi and psi (3686) decay to lambda(lambda)over-bar and sigma(0)(sigma)over-tilde(0) final states
文献类型：期刊论文
| 作者 | Ablikim, M.1; Achasov, M. N.9,66; 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 | 2017-03-15 |
| 卷号 | 95期号:5页码:10 |
| ISSN号 | 2470-0010 |
| DOI | 10.1103/physrevd.95.052003 |
| 通讯作者 | Ablikim, m.() |
| 英文摘要 | Using 1310.6 x 10(6) j/psi and 447.9 x 10(6) psi (3686) events collected with the besiii detector at the bepcii e(+)e(-) collider, the branching fractions and the angular distributions of j/psi and psi (3686) decays to lambda(lambda) over bar and sigma(0)(sigma) over tilde (0) final states are measured. the branching fractions are determined, with much improved precision, to be 19.43 +/- 0.03 +/- 0.33, 11.64 +/- 0.04 +/- 0.23, 3.97 +/- 0.02 +/- 0.12 and 2.44 +/- 0.03 +/- 0.11 for j/psi -> lambda(lambda) over bar -> sigma(0)(sigma) over tilde (0) , psi (3686) -> lambda(lambda) over bar and psi (3686) -> sigma(0)(sigma) over tilde (0), respectively. the polar angular distributions of psi (3686) decays are measured for the first time, while those of j/psi decays are measured with much improved precision. in addition, the ratios of branching fractions b(psi(3686)->lambda(lambda) over bar)/b(j/psi -> lambda(lambda) over bar) and b(psi(3686)->sigma(0)(sigma) over tilde (0))/b(j/psi ->sigma(0)(sigma) over tilde (0)) are determined to test the "12% rule." |
| WOS关键词 | BARYON ; ANNIHILATION |
| 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:000396278900001 |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2176751 |
| 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, Peoples R China 7.China Ctr Adv Sci & Technol, Beijing 100190, Peoples R China 8.COMSATS Inst Informat Technol, Lahore 54000, Pakistan 9.G I 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 j/psi and psi (3686) decay to lambda(lambda)over-bar and sigma(0)(sigma)over-tilde(0) final states[J]. Physical review d,2017,95(5):10. |
| APA | Ablikim, M..,Achasov, M. N..,Ahmed, S..,Albrecht, M..,Amoroso, A..,...&Zou, J. H..(2017).Study of j/psi and psi (3686) decay to lambda(lambda)over-bar and sigma(0)(sigma)over-tilde(0) final states.Physical review d,95(5),10. |
| MLA | Ablikim, M.,et al."Study of j/psi and psi (3686) decay to lambda(lambda)over-bar and sigma(0)(sigma)over-tilde(0) final states".Physical review d 95.5(2017):10. |
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