Theoretical study on the contributions of ω meson to the X(3872) → J/ψπ+π- and J/ψπ+π-π0 decays

被引：2

作者：

Wang, Hao-Nan ^{[1
,2
]}

Wang, Qian ^{[1
,3
,4
]}

Xie, Ju-Jun ^{[2
,5
,6
]}

机构：

[1] South China Normal Univ, Inst Quantum Matter, Guangdong Prov Key Lab Nucl Sci, Guangzhou 510006, Peoples R China

[2] Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China

[3] South China Normal Univ, Southern Nucl Sci Comp Ctr, Guangdong Hong Kong Joint Lab Quantum Matter, Guangzhou 510006, Guangdong, Peoples R China

[4] Chinese Acad Sci, Inst High Energy Phys, Theoret Phys Ctr Sci Facil, Beijing 100049, Peoples R China

[5] Univ Chinese Acad Sci, Sch Nucl Sci & Technol, Beijing 101408, Peoples R China

[6] Zhengzhou Univ, Sch Phys & Microelect, Zhengzhou 450001, Henan, Peoples R China

来源：

PHYSICAL REVIEW D | 2022年 / 106卷 / 05期

基金：

中国国家自然科学基金;

关键词：

STATE; CHARMONIUM; PENTAQUARK; MODEL;

D O I：

10.1103/PhysRevD.106.056022

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

With the new measurements of X(3872) -> J/psi pi(+)pi(-) from LHCb Collaboration, in addition to the dominant contribution from the rho(0) meson, we perform a theoretical study on the contribution of omega meson in the X(3872) -> J/psi pi(+)pi(-) and X(3872) -> J/psi pi(+)pi(-)pi(0) processes. For the X(3872) -> J/psi pi(+)pi(-) decay, in addition to the main contribution from rho(0) meson, we consider also the X(3872)J/psi omega coupling with omega meson decaying directly into pi(+)pi(-). It is found that the recent experimental measurements on the pi(+)pi(-) invariant mass distributions can be well reproduced, and the ratio of the couplings between X(3872) -> J/psi rho(0) and X(3872) -> J/psi omega is also evaluated. Within the parameters extracted from the pi(+)pi(-) invariant mass distributions of the X(3872) -> J/psi pi(+)pi(-) process, the branching fractions of the X(3872) -> J/psi omega channel relative to that of the X(3872) -> J/psi pi(+)pi(-)pi(0) channel and the pi(+)pi(-)pi(0) invariant mass distributions of the X(3872) -> J/psi pi(+)pi(-)pi(0) decay are calculated, which gives a hint for the further high-statistic experiment.

引用

页数：8

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