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Abstract:
Neutrinoless double beta decay is the primary means with which we can probe a potential Majorana nature of light neutrinos. Planned experiments searching for this hypothetical decay aim to be sensitive to half-lives of up to 10^28 years, allowing to probe Majorana neutrino mass scales of O(10 meV). It is also well established that neutrinoless double beta decay receives contributions beyond light neutrino exchange in New Physics scenarios beyond the Standard Model (SM) that incorporate lepton number violation, such as sterile Majorana neutrinos and R-Parity violating supersymmetry. After briefly reviewing neutrinoless double beta decay and its interpretations, I will motivate the use of two-neutrino double beta decay to probe for exotic physics as well. This decay, allowed in the SM and observed in several isotopes, is typically considered background to neutrinoless double beta decay searches. Besides allowing insights into nuclear matrix elements it can also be used to search for New Physics, though, due to high event statistics in current and future double beta decay searches. In this context, I will discuss modifications of the double beta decay spectrum due to exotic particle emission (such as kinks from sterile neutrinos), exotic currents beyond V-A and neutrino self-interactions, motivating the search for such scenarios.
Biography:
RESEARCH INTERESTS
SUBJECT AREA Theoretical Particle Physics
RESEARCH TOPICS Physics beyond the Standard Model, Model building and phenomenology, Neutrinos, Lepton number and flavour violation, High energy colliders, Supersymmetry, Grand unified theories, Effective field theories, Cosmology
ACADEMIC POSITIONS
OCT 2019 – Professor, University College London (UCL, UK)
SEP 2015 – SEP 2019 Associate Professor, UCL
JAN 2011 – AUG 2015 Lecturer (Assistant Professor), UCL
OCT 2007 – JAN 2011 Post-doctoral Research Associate, U. of Manchester (UK)
SEP 2005 – SEP 2007 Post-doctoral Research Fellow, DESY Hamburg (Germany)
MAY 2003 – NOV 2003 Marie Curie Fellow, IFIC Valencia (Spain)
JAN 2001 – AUG 2005 Research Assistant, U. of Würzburg (Germany)
Online Meeting room: https://meeting.tencent.com/dm/QiVtOw5zdymT
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