The (muon^-,muon^+) conversion in nuclei as a probe of new physics

Abstract

A detailed study of the muonic analogue of neutrinoless double beta decay, (muon^-,muon^+) conversion, has been carried out for the A=44 nuclear system. We studied several lepton number violating (LNV) mechanisms potentially triggering this process: exchange by light and heavy Majorana neutrinos as well as exchange by supersymmetric particles participating in R-parity violating interactions. The nuclear structure has been taken into account within the renormalized Quasiparticle Random Phase Approximation method. To our knowledge, this is the first realistic treatment of nuclear structure aspects of the (muon^-,muon^+) conversion. We estimated the rate of this process utilizing the existing experimental constraints on the parameters of the underlying LNV interactions and conclude that the (muon^-,muon^+) conversion is hardly detectable in the near future experiments.

arXiv comment23 pages, RevTex, 3 Postscript figures

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Cited by in corpus (7)

• The Search for Heavy Majorana Neutrinos
• Theory of neutrinoless double beta decay
• Neutrino-less Double Beta Decay and Particle Physics
• Upper Bounds on Lepton-number Violating Processes
• Deep inelastic $e-\tau$ and $\mu -\tau$ conversion in the NA64 experiment at the CERN SPS
• Nuclear muon-positron conversion mediated by Majorana neutrinos
• QCD Running in Lepton Number Violating Meson and Tau Decays