The strong coupling gX J/ψφ of X(4700) → J/ψφ in the light-cone sum rules

被引：3

作者：

Xie, Yiling ^{[1
]}

He, Dazhuang ^{[1
]}

Luo, Xuan ^{[2
]}

Sun, Hao ^{[1
]}

机构：

[1] Dalian Univ Technol, Inst Theoret Phys, Sch Phys, 2 Linggong Rd, Dalian 116024, Liaoning, Peoples R China

[2] Anhui Univ, Sch Phys & Optoelect Engn, Hefei 230601, Anhui, Peoples R China

来源：

NUCLEAR PHYSICS B | 2023年 / 987卷

基金：

中国国家自然科学基金;

关键词：

QCD;

D O I：

10.1016/j.nuclphysb.2023.116113

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

We assign the scalar tetraquark and the D-wave tetraquark state for X(4700) and calculate the width of the decay X(4700) -> J/psi phi within the framework of light-cone sum rules. The strong coupling gXJ/psi phi is obtained by considering the technique of soft-meson approximation. We also investigate the mass and the decay constant of X(4700) in the framework of SVZ sum rules. Our prediction for the mass is in agreement with the experimental measurement. For the decay width of X(4700) -> J/psi phi, if we assigns X(4700) as a scalar cs c over bar s over bar tetraquark state, we obtain Gamma = (109+35-24) MeV. On the contrary, if X(4700) is assigned as a D-wave tetraquark state, we obtain Gamma = (17.1+6.2 -4.0) MeV which is much smaller than the scalar one. (c) 2023 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons .org /licenses /by /4 .0/). Funded by SCOAP3.

引用

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