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Open charm effects in the explanation of the long-standing "rho pi puzzle"
Wang Q(王倩); Wang, Q; 赵强;Li, G; Zhao, Q
2012
发表期刊PHYSICAL REVIEW D
卷号85期号:7页码:74015
摘要A detailed analysis of the open charm effects on the decays of J/psi(psi') -> VP is presented, where V stands for light vector meson and P for light pseudoscalar meson. These are the channels that the so-called "12% rule'' of perturbative QCD (pQCD) is obviously violated. Nevertheless, they are also the channels that violate the pQCD helicity selection rule at leading order. In this work, we put constraints on the electromagnetic contribution, short-distance contribution from the c (c) over bar annihilation at the wave function origin, and long-distance contribution from the open charm threshold effects on these two decays. We show that interferences among these amplitudes, in particular, the destructive interferences between the short-distance and long-distance strong amplitudes, play a key role to evade the helicity selection rule and cause the significant deviations from the pQCD expected 12% rule.
学科领域Astronomy & Astrophysics; Physics
DOI10.1103/PhysRevD.85.074015
收录类别SCI
WOS记录号WOS:000302627300004
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被引频次:17[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/224583
专题理论物理室
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Wang Q,Wang, Q,赵强;Li, G,et al. Open charm effects in the explanation of the long-standing "rho pi puzzle"[J]. PHYSICAL REVIEW D,2012,85(7):74015.
APA 王倩,Wang, Q,赵强;Li, G,&Zhao, Q.(2012).Open charm effects in the explanation of the long-standing "rho pi puzzle".PHYSICAL REVIEW D,85(7),74015.
MLA 王倩,et al."Open charm effects in the explanation of the long-standing "rho pi puzzle"".PHYSICAL REVIEW D 85.7(2012):74015.
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