Neutrinoless Double Beta Decay with Composite Neutrinos

Abstract

We study in detail the contribution of heavy composite Majorana neutrinos to neutrino-less double beta decay. Our analysis confirms the result of a previous estimate by two of the authors. Excited neutrinos couple to the electroweak gauge bosons through a magnetic type effective Lagrangian. The relevant nuclear matrix element is related to matrix elements available in the literature and current bounds on the half-life of neutrino-less double beta decay are converted into bounds on the compositeness scale and/or the heavy neutrino mass. Our bounds are of the same order of magnitude as those available from accelerator experiments.

26 pages, 3 figures. RevTex file and 3 postscript figures. Numerical error corrected. This implies a slight change on the numerical results and in the figures. The conclusions are not affected. Uses an updated experimental input relative to the version to be published by the Physical Review D

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Cited by in corpus (13)

• Neutrino-less Double Beta Decay and Particle Physics
• Double Beta Decay
• Neutrinoless Double Beta Decay and Physics Beyond the Standard Model
• Signal of heavy Majorana neutrinos at hadron colliders
• Review of searches for vector-like quarks, vector-like leptons, and heavy neutral leptons in proton-proton collisions at $\sqrt{s}$ = 13 TeV at the CMS experiment
• High sensitivity GEM experiment on double beta decay of 76-Ge
• Grand unified theory constrained supersymmetry and neutrinoless double beta decay
• Neutrino oscillation constraints on neutrinoless double beta decay
• Search for a heavy composite Majorana neutrino in the final state with two leptons and two quarks at sqrt(s) = 13 TeV
• Signatures for Majorana neutrinos in $e^{-}\gamma$ collider
• Production of Like Sign Di-Leptons in p-p Collisions Through Composite Majorana Neutrinos
• Search for a heavy composite Majorana neutrino in events with dilepton signatures from proton-proton collisions at $\sqrt{s}$ = 13 TeV
• Constraints on NJL four-fermion effective interactions from neutrinoless double beta decay