We find that the triplet Higgs of the Type II seesaw mechanism can simultaneously generate the neutrino masses and observed baryon asymmetry, while playing a role in inflation. We survey the allowed parameter space and determine that this is possible for triplet masses as low as a TeV, with a preference for a small vacuum expectation value for the triplet vev  < 10 keV. This requires that the triplet Higgs must decay dominantly into the leptonic channel. Additionally, this model will be probed at the future 100 TeV collider, upcoming lepton flavor violation experiments such as Mu3e, and neutrinoless double beta decay experiments. Thus, this simple framework provides a unified solution to the three major unknowns of modern physics - inflation, the neutrino masses, and the observed baryon asymmetry - while simultaneously providing unique phenomenological predictions that will be probed terrestrially at upcoming experiments.

报告人简介：韩成成博士于2014年在中科院理论物理所博士毕业，2014-2020年分别在亚太理论物理中心(APCTP)、东京大学卡弗里数物连携宇宙研究机构(Kavli IPMU)和韩国高等研究院(KIAS)从事博士后研究。2020年入选中山大学中青年杰出人才计划，现任副教授，博士生导师。迄今已在PRL, JHEP等杂志发表论文四十余篇，总引用一千七百余次。主要研究兴趣包括粒子宇宙学、超对称理论及唯象和暗物质等相关物理。 

Contact联系人  王少江