重子数目的自发破缺，重子发生和重子

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

Physical Review D Pub Date : 2025-09-26 DOI:10.1103/physrevd.112.055039

Pedro Bittar, Gustavo Burdman, Gabriel M. Salla

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引用次数: 0

摘要

我们探讨了重子发生过程中总重子数的自发破缺。我们引入了一个包含三个马约拉纳费米子和一个携带重子数电荷的复标量的模型。对称性破缺后，重子的不对称性通过其中一个马约拉纳费米子的衰变在电弱尺度下产生。本文的主要焦点是U(1)B的Nambu-Goldstone玻色子的现象学，我们称之为贝约子。由于明显重子数破坏的来源很小，因此重子的质量很小，寿命通常很长。该模型避免了质子衰变，满足了宇宙学约束，并为大型强子对撞机提供了有趣的对撞机现象学。这些与重子发生有关的长寿命粒子有力地支持了远距探测器实验的发展，如MATHUSLA、FASER、SHiP等。

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Spontaneous breaking of baryon number, baryogenesis, and the bajoron

We explore the spontaneous breaking of global baryon number for baryogenesis. We introduce a model with three majorana fermions and a complex scalar carrying baryon number charge. After symmetry breaking, the baryon asymmetry is generated below the electroweak scale via the decays of one of the majorana fermions. The main focus of the paper is the phenomenology of the Nambu-Goldstone boson of U(1)B, which we call the bajoron. With small sources of explicit baryon number violation, the bajoron acquires a small mass and is generally very long-lived. The model avoids proton decay, satisfies cosmological constraints, and offers interesting collider phenomenology for the Large Hadron Collider. These long-lived particles tied to baryogenesis strongly support the development of far-detector experiments such as MATHUSLA, FASER, SHiP, and others.

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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.