Constraining New Physics with a Positive or Negative Signal of Neutrino-less Double Beta Decay

Abstract

We investigate numerically how accurately one could constrain the strengths of different short-range contributions to neutrino-less double beta decay in effective field theory. Depending on the outcome of near-future experiments yielding information on the neutrino masses, the corresponding bounds or estimates can be stronger or weaker. A particularly interesting case, resulting in strong bounds, would be a positive signal of neutrino-less double beta decay that is consistent with complementary information from neutrino oscillation experiments, kinematical determinations of the neutrino mass, and measurements of the sum of light neutrino masses from cosmological observations. The keys to more robust bounds are improvements of the knowledge of the nuclear physics involved and a better experimental accuracy.

23 pages, 3 figures. Minor changes. Matches version published in JHEP

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• Effective theory of a doubly charged singlet scalar: complementarity of neutrino physics and the LHC
• Radiative neutrino mass generation linked to neutrino mixing and $0\nu \beta \beta$-decay predictions
• On Lepton-Number-Violating Searches for Muon to Positron Conversion
• Neutrinoless double beta decay and QCD corrections
• Combining and comparing neutrinoless double beta decay experiments using different nuclei
• ${\mathbf{\mu }}^{-}$- ${\mathbf{e}}^{+}$ Conversion from Short-Range Operators
• Constraints on lepton number violating short-range interactions from $|\Delta L|=2$ processes
• A Radiative Neutrino Model with $SU(2{)}_L$ Triplet Fields
• Charged Higgs contribution to $0\nu 2\beta$ decay
• Lepton number violating operators with standard model gauge fields: A survey of neutrino masses from 3-loops and their link to dark matter
• $\rho$ exchange contribution to neutrinoless double beta decay