Hidden charmed decays of X(3872) within the DD¯* molecular framework

IF 5.3 2区物理与天体物理 Q1 Physics and Astronomy

Physical Review D Pub Date : 2025-06-09 DOI:10.1103/gn25-fc9q

Hao-Dong Cai, Zhao-Sai Jia, Gang Li, Shi-Dong Liu

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引用次数: 0

Abstract

The dipionic transition of the X(3872) to the ηc was investigated using an effective Lagrangian approach. In this study, the X(3872) was assumed to be a DD¯*+c.c. bound state with the quantum numbers JPC=1++ and to decay via triangle and box loops. It is found that the partial decay widths arising from the box loops are one order of magnitude greater than those from the triangle ones. The decay widths are model-dependent, as characterized by the cutoff parameter introduced in the form factor. Moreover, the charged and neutral DD¯* configurations of the X(3872) and its mass also influence the decay widths. With our model parameters, the decay widths for the X(3872)→π+π−ηc can reach up to several tens of keV. We hope that the current calculations within the molecular interpretation will be helpful for the future experiments.

Published by the American Physical Society

2025

查看原文本刊更多论文

在DD¯*分子框架内隐藏的X（3872）的迷人衰变

用有效的拉格朗日方法研究了X（3872）到ηc的双π跃迁。在本研究中，X（3872）被假设为DD¯*+c。量子数为JPC=1++的束缚态，并通过三角环和箱形环衰减。结果表明，箱形环产生的部分衰减宽度比三角形环产生的部分衰减宽度大一个数量级。衰减宽度是模型相关的，由外形因素中引入的截止参数表征。此外，X（3872）的带电和中性DD¯*结构及其质量也会影响衰变宽度。在我们的模型参数下，X（3872）→π+π−ηc的衰减宽度可以达到几十keV。我们希望目前在分子解释中的计算对未来的实验有帮助。2025年由美国物理学会出版

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Physical Review D 物理-天文与天体物理

CiteScore

9.20

自引率

36.00%

发文量

审稿时长

2 months

期刊介绍： Physical Review D (PRD) is a leading journal in elementary particle physics, field theory, gravitation, and cosmology and is one of the top-cited journals in high-energy physics. PRD covers experimental and theoretical results in all aspects of particle physics, field theory, gravitation and cosmology, including: Particle physics experiments, Electroweak interactions, Strong interactions, Lattice field theories, lattice QCD, Beyond the standard model physics, Phenomenological aspects of field theory, general methods, Gravity, cosmology, cosmic rays, Astrophysics and astroparticle physics, General relativity, Formal aspects of field theory, field theory in curved space, String theory, quantum gravity, gauge/gravity duality.