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The Physics of Neutrinoless Double Beta Decay: A Primer

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arxiv 2108.09364 v2 pith:QXCHXVCI submitted 2021-08-20 nucl-ex hep-phnucl-th

The Physics of Neutrinoless Double Beta Decay: A Primer

classification nucl-ex hep-phnucl-th
keywords betadecaydoublemajorananeutrinoneutrinolessconnectiondirac
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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Neutrinoless double beta decay is a hypothetical radioactive process which, if observed, would prove the neutrino to be a Majorana fermion: a particle that is its own antiparticle. In this lecture mini-series I discuss the physics of Majorana fermions and the connection between the nature of neutrino mass and neutrinoless double beta decay. We review Dirac and Majorana spinors, discuss methods of distinguishing between Majorana and Dirac fermions, and derive in outline the connection between neutrino mass and double beta decay rates. We conclude by briefly summarizing the experimental landscape and the challenges associated with searches for this elusive process.

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