最小U(1)Lμ−Lτ模型的全局中微子约束

IF 5 2区物理与天体物理 Q1 Physics and Astronomy

Physical Review D Pub Date : 2025-05-30 DOI:10.1103/physrevd.111.095034

Masahiro Ibe, Satoshi Shirai, Keiichi Watanabe

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引用次数: 0

摘要

我们根据最新的中微子数据，包括中微子振荡、宇宙学观测、直接质量测量和无中微子双β衰变，来检验最小U(1)Lμ−Lτ规范模型。使用最保守的振荡数据，我们发现在大约90%的置信水平（CL）上排除了正常排序。结合宇宙微波背景观测的宇宙学约束，将这种排除率提高到95%左右，而进一步包括重子声学振荡数据，则将其提高到近99%。倒序则更不受欢迎。我们的分析是在频率框架内进行的，最大限度地减少了对贝叶斯方法固有的先验假设的敏感性。这些结果对最小U(1)Lμ−Lτ规范模型的可行性施加了强烈的约束。2025年由美国物理学会出版

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Global neutrino constraints on the minimal U(1)Lμ−Lτ model

We examine the minimal U(1)Lμ−Lτ gauge model in light of the latest neutrino data, including neutrino oscillations, cosmological observations, direct mass measurements, and neutrinoless double-beta decay. Using the most conservative oscillation data, we find that normal ordering is excluded at approximately the 90% confidence level (CL). Incorporating cosmological constraints from cosmic microwave background observations strengthens this exclusion to about 95% CL, while further including baryon acoustic oscillation data increases it to nearly 99% CL. The inverted ordering is even more strongly disfavored. Our analysis is performed within a frequentist framework, minimizing sensitivity to prior assumptions inherent in Bayesian approaches. These results impose strong constraints on the viability of the minimal U(1)Lμ−Lτ gauge model.

Published by the American Physical Society

2025

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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.