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arXiv 2201.11502hep-phastro-ph.CO
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通过暗物质振荡的冻结稀薄成因

Freeze-in Leptogenesis via Dark-Matter Oscillations

Justin Berman, Brian Shuve, David Tucker-Smith

摘要:

我们通过暗物质振荡研究了冻结重子生成的宇宙学和唯象,将暗物质与标准模型轻子耦合。我们调查可行的模型,有和没有一个$Z_2$对称下,所有新的领域负责。轻子味效应是很重要的leptogenesis在这些模型中,我们确定的方案中,重子不对称性是参数不同的和增强相对于leptogenesis从无菌中微子振荡。我们研究的模型预测了新的电弱带电场的存在,并且可以通过对撞机搜索,结构形成研究,X射线观测和地面低能测试的组合进行测试。

英文摘要:

We study the cosmology and phenomenology of freeze-in baryogenesis via dark-matter oscillations, taking the dark matter to couple to Standard Model leptons. We investigate viable models both with and without a $Z_2$ symmetry under which all new fields are charged. Lepton flavor effects are important for leptogenesis in these models, and we identify scenarios in which the baryon asymmetry is parametrically distinct from and enhanced relative to leptogenesis from sterile neutrino oscillations. The models we study predict the existence of new, electroweak-charged fields, and can be tested by a combination of collider searches, structure-formation studies, X-ray observations, and terrestrial low-energy tests.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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