报告题目：Neutrinolessdouble beta decay in the nuMSM

报告人：Dr.HiroyukiIshida

工作单位：KEK, Japan.

报告时间: 2019年11月27日15：00

报告地点：中心校区物理楼333报告厅

摘要：The (neutrinominimal standard model) nuMSM is one of the most attractive and the simplestextension of the standard model by introducing three right-handed neutrinoswith masses below the electroweak scale which is about 100 GeV. The modelpotentially has possibilities to explain the most mysterious problems of thestandard model (SM) of the particle physics such as non-zero neutrino masses,the origin of the baryon asymmetry of the universe, and an existence of thedark matter candidate. In this talk, I briefly review the model and severalinteresting features. Interestingly, once one introduces right-handedneutrinos, Majorana neutrinos are predicted and such Majorana particles can beproved by neutrinoless double beta decay experiments. There is definiteprediction of the effective mass of neutrinoless double beta decays within theSM with observed tiny neutrino masses framework and many experiments giveconstraints on the effective mass so far.I will explain that the model would have a possible enhancement of theeffective mass from it of the SM due to contributions of right-handed neutrinos.

主办单位：尊龙凯时物理学院

尊龙凯时理论物理中心