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Abstract:
If the light neutrinos are Majorana fermions, lepton number is violated at the classical (Lagrangian) level. Lepton number violation can be undoubtedly probed in the neutrinoless double beta decay process. However, neutrino oscillation and cosmological measurements suggest that we may have to go beyond the standard mechanism to observe a positive signal in neutrinoless double beta decay experiments. We find that there exist well-motivated scenarios for lepton number violation if new particles are at or below the TeV scale. Moreover, TeV-scale lepton number violation can be tested at high-energy colliders with complementary sensitivities, and would also have interesting implications for astrophysics/cosmology.
Biography:
Gang Li received his Ph.D. from Peking University in 2017, and then he worked as a postdoctoral research associate at National Taiwan University (2017-2019). Now he is a postdoctoral research associate at University of Massachusetts Amherst. He has been working on physics beyond the Standard Model, in particular on neutrinoless double beta decay, Higgs physics, dark photon, CP violation and collider phenomenology.
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Video:https://vshare.sjtu.edu.cn/play/d13c3636073de08fb06aeb3d11ee5f08