The χc J decay to φK*(K)over-bar, φh1(1380) testing the nature of axial vector meson resonances

被引：10
|
作者：
Jiang, Sheng-Juan [1 ,2 ]
Sakai, S. [3 ]
Liang, Wei-Hong [1 ,2 ]
Oset, E. [1 ,4 ,5 ]
机构：
[1] Guangxi Normal Univ, Dept Phys, Guilin 541004, Peoples R China
[2] Guangxi Normal Univ, Guangxi Key Lab Nucl Phys & Technol, Guilin 541004, Peoples R China
[3] Chinese Acad Sci, Inst Theoret Phys, Zhong Guan Cun East St 55, Beijing 100190, Peoples R China
[4] Ctr Mixto Univ Valencia, CSIC, Inst Invest Paterna, Dept Fis Teor, Aptdo 22085, Valencia 46071, Spain
[5] Ctr Mixto Univ Valencia, CSIC, Inst Invest Paterna, IFIC, Aptdo 22085, Valencia 46071, Spain
来源：
PHYSICS LETTERS B | 2019年 / 797卷
基金：
中国国家自然科学基金;
关键词：
DYNAMICS;
D O I：
10.1016/j.physletb.2019.134831
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We perform a theoretical study of the chi(cJ) -> phi K*(K) over bar -> phi K pi(K) over bar reaction taking into account the K*(K) over bar final state interaction, which in the chiral unitary approach is responsible, together with its coupled channels, for the formation of the low lying axial vector mesons, in this case the h(1)(1380) given the selection of quantum numbers. Based on this picture we can easily explain why in the chi(c0) decay the h(1)(1380) resonance is not produced, and, in the case of chi(c1) and chi(c2) decay, why a dip in the K+ pi K-0(-) mass distribution appears in the 1550-1600 MeV region, that in our picture comes from a destructive interference between the tree level mechanism and the rescattering that generates the h(1)(1380) state. Such a dip is not reproduced in pictures where the nominal h(1)(1380) signal is added incoherently to a background, which provides support to the picture where the resonance appears from rescattering of vector-pseudoscalar components. (C) 2019 The Authors. Published by Elsevier B.V.
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页数：5
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