Parity, charge conjugation, and SU(3) constraints on threshold enhancement in J/psi decays into gamma p(p)over-bar and Kp(Lambda)over-bar
文献类型：期刊论文
| 作者 | He, XG; Li, XQ; Ma, JP ; He, XG , Nankai Univ, Dept Phys, Tianjin 300071, Peoples R China.
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| 刊名 | PHYSICAL REVIEW D
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| 出版日期 | 2005 |
| 卷号 | 71期号:1页码:- |
| ISSN号 | 0556-2821 |
| 英文摘要 | We study the threshold enhancement effects of baryon-antibaryon systems in J/psi decays at BES using parity P, charge conjugation C, and flavor SU(3) symmetries. The P and C symmetries restrict the p (p) over bar in J/psi-->gammap (p) over bar to be in a state with C=+1, while the p (p) over bar in J/psi-->pi(0)p (p) over bar to be with C=-1. Combining the C and P symmetries with flavor SU(3) symmetry, i.e., the CPS symmetry, we find that the Lambda(p) over bar system cannot be in 0(+) and 0(-) states in J/psi-->K(+)Lambda(p) over bar. We provide a consistent explanation of observation and nonobservation of near threshold enhancements in J/psi-->K(+)Lambda(p) over bar and J/psi-->pi(0)p (p) over bar, respectively. We also find that near baryon pair threshold enhancement can happen in several channels for J/psi decays and can be several times larger than that observed in J/psi-->K(+)Lambda(p) over bar in some channels. |
| 学科主题 | Physics |
| URL标识 | 查看原文 |
| WOS记录号 | WOS:000226702300050 |
| 公开日期 | 2012-08-30 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/13921]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 通讯作者 | He, XG , Nankai Univ, Dept Phys, Tianjin 300071, Peoples R China. |
| 推荐引用方式 GB/T 7714 | He, XG,Li, XQ,Ma, JP,et al. Parity, charge conjugation, and SU(3) constraints on threshold enhancement in J/psi decays into gamma p(p)over-bar and Kp(Lambda)over-bar[J]. PHYSICAL REVIEW D,2005,71(1):-. |
| APA | He, XG,Li, XQ,Ma, JP,&He, XG , Nankai Univ, Dept Phys, Tianjin 300071, Peoples R China..(2005).Parity, charge conjugation, and SU(3) constraints on threshold enhancement in J/psi decays into gamma p(p)over-bar and Kp(Lambda)over-bar.PHYSICAL REVIEW D,71(1),-. |
| MLA | He, XG,et al."Parity, charge conjugation, and SU(3) constraints on threshold enhancement in J/psi decays into gamma p(p)over-bar and Kp(Lambda)over-bar".PHYSICAL REVIEW D 71.1(2005):-. |
入库方式： OAI收割
来源：理论物理研究所
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