511-keV伽马射线过量的费顿（B-L规玻色子）暗物质与低能中微子通量预测* * 国家 "千人计划 "人才科学启动项目、国家自然科学基金（12175134、12375101、12090060、12090064、12247141）、上海交通大学 "双一流 "启动基金（WF220442604）和日本文部科学省 "世界一流国际研究中心计划"（WPI计划）资助

IF 3.6 2区物理与天体物理 Q1 PHYSICS, NUCLEAR

中国物理C Pub Date : 2024-08-01 DOI:10.1088/1674-1137/ad4af3

Jie Sheng, Yu Cheng, Weikang Lin, Tsutomu T. Yanagida

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引用次数: 0

摘要

费厄子是规理论的规玻色子。如果量规耦合常数非常小，费厄子就会成为暗物质的候选者。我们的研究表明，它衰变成一对电子和正电子的过程可以解释观测到的银河系 511-keV 伽马射线超标现象。这种费厄子暗物质主要衰变为一对中微子和一对反中微子。未来的低能实验具有更强的定向能力，可以捕捉到这些中微子信号。跷跷板激励的参数空间预测了一个相对较短的费顿寿命，与当前的宇宙学约束相当。

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Féeton (B-L gauge boson) dark matter for the 511-keV gamma-ray excess and the prediction of low-energy neutrino flux* * Supported by the Talent Scientific Start-Up Project of China, the Natural Science Foundation of China (12175134, 12375101, 12090060, 12090064, 12247141), the SJTU Double First Class start-up fund(WF220442604), and the World Premier International Research Center Initiative (WPI Initiative), MEXT, Japan

The féeton is the gauge boson of the

gauge theory. If the gauge coupling constant is extremely small, the féeton becomes a candidate for dark matter. We show that its decay to a pair of an electron and a positron explains the observed Galactic 511-keV gamma-ray excess in a consistent manner. This féeton dark matter decays mainly into pairs neutrino and anti-neutrino. Future low-energy experiments with improved directional capability will enable capturing these neutrino signals. The seesaw-motivated parameter space predicts a relatively short féeton lifetime that is comparable to the current cosmological constraint.

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来源期刊

中国物理C 物理-物理：核物理

CiteScore

6.50

自引率

8.30%

发文量

8976

审稿时长

1.3 months

期刊介绍： Chinese Physics C covers the latest developments and achievements in the theory, experiment and applications of: Particle physics; Nuclear physics; Particle and nuclear astrophysics; Cosmology; Accelerator physics. The journal publishes original research papers, letters and reviews. The Letters section covers short reports on the latest important scientific results, published as quickly as possible. Such breakthrough research articles are a high priority for publication. The Editorial Board is composed of about fifty distinguished physicists, who are responsible for the review of submitted papers and who ensure the scientific quality of the journal. The journal has been awarded the Chinese Academy of Sciences ‘Excellent Journal’ award multiple times, and is recognized as one of China''s top one hundred key scientific periodicals by the General Administration of News and Publications.