Observation of the helicity-selection-rule suppressed decay of the chi(c2) charmonium state
文献类型：期刊论文
| 作者 | Ablikim, M.1; Achasov, M. N.9,66; Ahmed, S.14; Ai, X. C.1; Albayrak, O.5; Albrecht, M.4; Ambrose, D. J.50; Amoroso, A.55,57,62; An, F. F.1; An, Q.52,62 |
| 刊名 | Physical review d
 |
| 出版日期 | 2017-12-07 |
| 卷号 | 96期号:11页码:8 |
| ISSN号 | 2470-0010 |
| DOI | 10.1103/physrevd.96.111102 |
| 通讯作者 | Ablikim, m.() |
| 英文摘要 | The decays of chi(c2) -> k+k- pi(0), ksk +/-pi(-/+), and pi(+)pi(-)pi(0) are studied with the psi(3686) data samples collected with the beijing spectrometer ( besiii). for the first time, the branching fractions of chi(c2) -> k*(k) over bar,chi(c2) -> a(2)(+/-)(1320)pi(-/+)/a(2)(0)(1320)pi(0), and chi(c2) -> rho(770)(+/-)pi(-/+) are measured. here, k*(k) over bar denotes both k*k-+/-(-/+) and its isospin-conjugated process k*(0)(k) over bar (0) + c: c:, and k* denotes the resonances k*(892), k*(2)(1430), and k*(3)(1780). the observations indicate a strong violation of the helicity selection rule in chi(c2) decays into vector and pseudoscalar meson pairs. the measured branching fractions of chi(c2) -> k*(892)(k) over bar are more than ten times larger than the upper limit of chi(c2) -> rho(770)(+/-)pi(-/+), which is so far the first direct observation of a significant u-spin symmetry breaking effect in charmonium decays. |
| WOS关键词 | TENSOR FORMALISM ; MESONS |
| 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:000417477400001 |
| 出版者 | AMER PHYSICAL SOC |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2178285 |
| 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. Observation of the helicity-selection-rule suppressed decay of the chi(c2) charmonium state[J]. Physical review d,2017,96(11):8. |
| APA | Ablikim, M..,Achasov, M. N..,Ahmed, S..,Ai, X. C..,Albayrak, O..,...&Zou, J. H..(2017).Observation of the helicity-selection-rule suppressed decay of the chi(c2) charmonium state.Physical review d,96(11),8. |
| MLA | Ablikim, M.,et al."Observation of the helicity-selection-rule suppressed decay of the chi(c2) charmonium state".Physical review d 96.11(2017):8. |
入库方式： iSwitch采集
来源：高能物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。