Early Universe Hypercharge Breaking and Neutrino Mass Generation

IF 9 1区物理与天体物理 Q1 PHYSICS, MULTIDISCIPLINARY Physical review letters Pub Date : 2025-01-30 DOI:10.1103/physrevlett.134.041802

S. López-Zurdo, A. Lozano-Onrubia, L. Merlo, J. M. No

{"title":"Early Universe Hypercharge Breaking and Neutrino Mass Generation","authors":"S. López-Zurdo, A. Lozano-Onrubia, L. Merlo, J. M. No","doi":"10.1103/physrevlett.134.041802","DOIUrl":null,"url":null,"abstract":"We show that the conditions allowing for a spontaneous breaking of the U</a:mi>(</a:mo>1</a:mn>)</a:mo></a:mrow>Y</a:mi></a:mrow></a:msub></a:mrow></a:math> hypercharge gauge symmetry of the standard model (SM) in the early Universe are generically present in extensions of the SM addressing the generation of light neutrino masses via radiative contributions. In such scenarios, the breaking of (hyper)charge at high temperatures yields new possibilities for explaining the observed matter-antimatter asymmetry of the Universe. Considering for concreteness the Zee-Babu radiative neutrino mass generation model, we show that a period of hypercharge breaking prior to the electroweak phase transition could allow for successful baryogenesis via a nonconventional leptogenesis mechanism, based on the presence of charge-breaking masses for the SM leptons in the early Universe. Published by the American Physical Society 2025 ","PeriodicalId":20069,"journal":{"name":"Physical review letters","volume":"63 1","pages":""},"PeriodicalIF":9.0000,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Physical review letters","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.1103/physrevlett.134.041802","RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"PHYSICS, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 0

Abstract

We show that the conditions allowing for a spontaneous breaking of the U(1)Y hypercharge gauge symmetry of the standard model (SM) in the early Universe are generically present in extensions of the SM addressing the generation of light neutrino masses via radiative contributions. In such scenarios, the breaking of (hyper)charge at high temperatures yields new possibilities for explaining the observed matter-antimatter asymmetry of the Universe. Considering for concreteness the Zee-Babu radiative neutrino mass generation model, we show that a period of hypercharge breaking prior to the electroweak phase transition could allow for successful baryogenesis via a nonconventional leptogenesis mechanism, based on the presence of charge-breaking masses for the SM leptons in the early Universe.

Published by the American Physical Society

2025

查看原文

微信好友朋友圈 QQ好友复制链接

本刊更多论文

早期宇宙超荷破缺和中微子质量生成

我们表明，早期宇宙中允许标准模型（SM）的U(1)Y超荷规范对称自发破断的条件通常存在于通过辐射贡献产生轻中微子质量的SM扩展中。在这种情况下，高温下（超）电荷的断裂为解释观测到的宇宙物质-反物质不对称提供了新的可能性。考虑到Zee-Babu辐射中微子质量生成模型的具体情况，我们表明，基于早期宇宙中SM轻子的电荷破碎质量的存在，在电弱相变之前的一段超荷破缺期可以通过非传统的轻生机制成功地实现重子生成。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。

求助全文

约1分钟内获得全文去求助

来源期刊

Physical review letters 物理-物理：综合

CiteScore

16.50

自引率

7.00%

发文量

2673

审稿时长

2.2 months

期刊介绍： Physical review letters(PRL)covers the full range of applied, fundamental, and interdisciplinary physics research topics: General physics, including statistical and quantum mechanics and quantum information Gravitation, astrophysics, and cosmology Elementary particles and fields Nuclear physics Atomic, molecular, and optical physics Nonlinear dynamics, fluid dynamics, and classical optics Plasma and beam physics Condensed matter and materials physics Polymers, soft matter, biological, climate and interdisciplinary physics, including networks