中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
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
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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