χc0ω production in e+e- annihilation through ψ(4160)

被引：8
|
作者：
Li, Xin [1 ]
Voloshin, M. B. [1 ,2 ,3 ]
机构：
[1] Univ Minnesota, Sch Phys & Astron, Minneapolis, MN 55455 USA
[2] Univ Minnesota, William I Fine Theoret Phys Inst, Minneapolis, MN 55455 USA
[3] Inst Theoret & Expt Phys, Moscow 117218, Russia
来源：
PHYSICAL REVIEW D | 2015年 / 91卷 / 03期
关键词：
D O I：
10.1103/PhysRevD.91.034004
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We argue that the recent BESIII data on the cross section for the process e(+)e(-) -> chi(c0)omega. in the center-of-mass energy range 4.21-4.42 GeV can be described by the contribution of the known charmoniumlike resonance psi(4160) with the mass of about 4190 MeV. The value of the coupling in the transition psi(4160) -> chi(c0)omega needed for this mechanism is comparable to that in another known similar transition, chi(c0)(2P) -> J/psi omega. The suggested mechanism also naturally explains the relatively small reported value of the cross section for the final states chi(c1)omega and chi(c2)omega above their respective thresholds.
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页数：3
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