Exploring the molecular scenario of X(4160)

Ruitian Li; Dazhuang He; Xuan Luo; Hao Sun

doi:10.1140/epjc/s10052-024-13344-x

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2024 Impact factor 4.8

Particles and Fields

Open Access

Eur. Phys. J. C (2024) 84: 957
https://doi.org/10.1140/epjc/s10052-024-13344-x

Regular Article - Theoretical Physics

Exploring the molecular scenario of X(4160)

Ruitian Li¹, Dazhuang He¹, Xuan Luo² and Hao Sun¹^d

¹ Institute of Theoretical Physics, School of Physics, Dalian University of Technology, No. 2 Linggong Road, 116024, Dalian, Liaoning, People’s Republic of China
² School of Physics and Optoelectronics Engineering, Anhui University, 230601, Hefei, Anhui, People’s Republic of China

^d haosun@dlut.edu.cn

Received: 8 May 2024
Accepted: 5 September 2024
Published online: 27 September 2024

Abstract

In this work, we investigate the decays of meson X(4160) in the molecular frame. By using an effective lagrangian approach, we calculate the widths of $X (4160) \to J / ψ ϕ$ $X(4160)\rightarrow J/\psi \phi$ , $D^{*} {\bar{D}}^{*}$ $D^*\bar{D}^*$ , $D^{*} \bar{D}$ $D^*\bar{D}$ and $D \bar{D}$ $D\bar{D}$ through the triangle loop mechanism in the molecular scenario. Based on the compositeness condition, the coupling between X(4160) and the $D_{s}^{*} {\bar{D}}_{s}^{*}$ $D_s^*\bar{D}_s^*$ molecular state is determined. The other coupling constants used are determined phenomenologically. The calculation of the decay widths shows that the $D^{*} {\bar{D}}^{*}$ $D^*\bar{D}^*$ decay mode has a larger branching ratio. These predictions can be seen as a test for the charmonium assignment of X(4160).

© The Author(s) 2024

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