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IF 5 2区 物理与天体物理 Q1 Physics and Astronomy
Physical Review D Pub Date : 2025-02-27 DOI:10.1103/physrevd.111.034046
Meng-Yuan Li, Wen-Tao Lyu, Li-Juan Liu, En Wang
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引用次数: 0

摘要

我们研究了Λc+→π+ηn过程，考虑了核子共振N(1535)和标量介子a0(980)的贡献，它们可能分别由S波伪标量介子-八重子和S波伪标量介子-伪标量介子的相互作用动态产生。我们的结果表明，在ηn不变质量分布中，存在一个显著的近阈值增强结构，这可能与N(1535)有关。另一方面，我们可以发现在π+η不变质量分布中，a0(980)存在明显的尖顶结构。我们进一步估算出比率 R=B(Λc+→a0(980)+n)/B(Λc+→π+ηn)≈0.313 。我们的结果可以在未来的BESIII、Belle II和拟议中的超级头粲设施实验中得到检验。 美国物理学会2025年出版
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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Roles of the N(1535) and a0(980) in the process Λc+→π+ηn
We have investigated the process Λc+→π+ηn by taking into account the contributions from the nucleon resonance N(1535) and the scalar meson a0(980), which could be dynamically generated by the interaction of the S-wave pseudoscalar meson-octet baryon and the S-wave pseudoscalar meson-pseudoscalar meson, respectively. Our results show that, in ηn invariant mass distribution, there is a significant near-threshold enhancement structure, which could be associated with N(1535). On the other hand, one can find a clear cusp structure of a0(980) in π+η invariant mass distribution. We further estimate the ratio R=B(Λc+→a0(980)+n)/B(Λc+→π+ηn)≈0.313. Our results can be tested by BESIII, Belle II, and the proposed Super Tau-Charm Facility experiments in the future. Published by the American Physical Society 2025
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来源期刊
Physical Review D
Physical Review D 物理-天文与天体物理
CiteScore
9.20
自引率
36.00%
发文量
0
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.
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