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Abstract:
This two-lecture series provides a theoretical introduction to neutrinoless double beta (0νββ) decay. The primary motivation for studying this decay lies in its unique potential to probe fundamental symmetries of the Standard Model (SM). Specifically, it is the main probe of the potential Majorana nature of neutrinos and its discovery would show that total lepton number is violated, with profound implications for our understanding of mass generation. After establishing the context within neutrino physics, we will calculate the two-neutrino double beta decay rate, separating the phase space factor from the nuclear matrix element. We will then focus on 0νββ decay as the crucial observable of interest where we will first explore the standard mechanism of light Majorana neutrino exchange but this is not the only possibility; other beyond-the-SM physics, such as heavy sterile neutrinos, could also mediate the decay. We will conclude by examining the theoretical challenges and opportunities in probing double beta decay at current and future experiments.
Bio：Prof. Deppisch received his Ph.D. from the University of Wuerzburg (Germany) in 2005 in Theoretical Particle Physics. After two postdoctoral positions, at DESY Hamburg (Germany) and the University of Manchester (UK), he has been appointed Professor at University College London (UCL, UK) since 2011. His main area of research is neutrino and Beyond-the-SM physics, with a focus neutrino masses and lepton number violation.
Onine link: https://meeting.tencent.com/dm/jKJpIc2qEaiz
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