STUDY OF THE ELECTROMAGNETIC TRANSITIONS J/psi -> Pl(+)l(-) AND PROBE DARK PHOTON
文献类型：期刊论文
| 作者 | Fu, JL; Li HB(李海波) ; Qin XS(秦小帅); Li, HB; Qin, XS; Yang, MZ
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| 刊名 | MODERN PHYSICS LETTERS A
 |
| 出版日期 | 2012 |
| 卷号 | 27期号:38页码:1250223 |
| 英文摘要 | We study the electromagnetic Dalitz decay modes of J / psi -> Pl(+)l(-) (P = pi(0), eta or eta'). In these decays, the lepton pairs are formed by internal conversion of an intermediate virtual photon with invariant mass m(l+l-). Study of the effective-mass spectrum of the l(+)l(-) will shed light on the dynamic transition form factor F-J/psi P (q(2)) (q(2) = m(l+l-)(2)), which characterizes the electromagnetic structure arising at the vertex of the transition J/ to pseudoscalars. We also discuss the direct productions of a GeV scale vector U boson in these processes J/psi PU (U -> l(+)l(-)). It is responsible for mediating a new U(1)d interaction, as recently exploited in the context of weakly interacting massive particle dark matter. In this paper, we firstly use the usual pole approximation for the form factor to estimate the decay rate of J / psi -> Pl(+)l(-) in the standard model. Then the reach of searching for the dark photon is estimated. We suggest that these Dalitz decays can be used to search for the light U boson in the BESIII experiment with a huge J/psi data set. |
| 学科主题 | Physics |
| 收录类别 | SCI |
| WOS记录号 | WOS:000311806200006 |
| 公开日期 | 2016-05-03 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/224772]  |
| 专题 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Fu, JL,Li HB,Qin XS,et al. STUDY OF THE ELECTROMAGNETIC TRANSITIONS J/psi -> Pl(+)l(-) AND PROBE DARK PHOTON[J]. MODERN PHYSICS LETTERS A,2012,27(38):1250223. |
| APA | Fu, JL,李海波,秦小帅,Li, HB,Qin, XS,&Yang, MZ.(2012).STUDY OF THE ELECTROMAGNETIC TRANSITIONS J/psi -> Pl(+)l(-) AND PROBE DARK PHOTON.MODERN PHYSICS LETTERS A,27(38),1250223. |
| MLA | Fu, JL,et al."STUDY OF THE ELECTROMAGNETIC TRANSITIONS J/psi -> Pl(+)l(-) AND PROBE DARK PHOTON".MODERN PHYSICS LETTERS A 27.38(2012):1250223. |
入库方式： OAI收割
来源：高能物理研究所
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