Measurement of the chi(c2) polarization in psi(2S)->gamma chi(c2)
文献类型:期刊论文
作者 | BES Callaboration |
刊名 | PHYSICAL REVIEW D
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出版日期 | 2004 |
卷号 | 70期号:9 |
关键词 | RELATIVISTIC CORRECTIONS QUARKONIUM DECAY DISTRIBUTIONS CHARMONIUM |
通讯作者 | Ablikim, M (reprint author), Inst High Energy Phys, Beijing 100039, Peoples R China. |
英文摘要 | The polarization of the chi(c2) produced in psi(2S) decays into gammachi(c2) is measured using a sample of 14x10(6)psi(2S) events collected by the BESII detector at the BEPC storage ring. A fit to the chi(c2) production and decay angular distributions in psi(2S)-->gammachi(c2), chi(c2)-->pi(+)pi(-) and K+K- yields values x=A(1)/A(0)=2.08+/-0.44 and y=A(2)/A(0)=3.03+/-0.66, with a correlation rho=0.92 between them, where A(0,1,2) are the chi(c2) helicity amplitudes. The measurement agrees with a pure E1 transition, and M2 and E3 contributions do not differ significantly from zero. |
学科主题 | Astronomy & Astrophysics; Physics |
类目[WOS] | Astronomy & Astrophysics ; Physics, Particles & Fields |
收录类别 | SCI |
语种 | 英语 |
WOS记录号 | WOS:000225440600016 |
公开日期 | 2016-02-26 |
源URL | [http://ir.ihep.ac.cn/handle/311005/212482] ![]() |
专题 | 高能物理研究所_实验物理中心 |
作者单位 | 中国科学院高能物理研究所 |
推荐引用方式 GB/T 7714 | BES Callaboration. Measurement of the chi(c2) polarization in psi(2S)->gamma chi(c2)[J]. PHYSICAL REVIEW D,2004,70(9). |
APA | BES Callaboration.(2004).Measurement of the chi(c2) polarization in psi(2S)->gamma chi(c2).PHYSICAL REVIEW D,70(9). |
MLA | BES Callaboration."Measurement of the chi(c2) polarization in psi(2S)->gamma chi(c2)".PHYSICAL REVIEW D 70.9(2004). |
入库方式: OAI收割
来源:高能物理研究所
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