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
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。