Superheavy Majorana neutrino effects in the lepton-number violating e- + e- -> mu- + mu- process

Details Superheavy Majorana neutrino effects in the lepton-number violating e- + e- -> mu- + mu- process Superheavy Majorana neutrino effects in the lepton-number violating e- + e- -> mu- + mu- process

2000-03-09

arxiv.org/abs/hep-ph/0003077v2

Phys.Lett. B495 (2000) 131-135

Physics

High Energy Physics

High Energy Physics - Phenomenology

5 pages LaTeX + 1 postscript figure. Some references added; some new paragraphs added in the text

Scientific paper

10.1016/S0370-2693(00)01208-9

In the minimal extension of the standard electroweak theory with ultra massive Majorana neutrinos, the process e- + e- -> mu- + mu- could be observable, in sharp contrast with the reaction e- + e- -> W- + W- which is entirely controlled by neutrinoless double beta decay $\beta \beta_{0 \nu}$ data. Our result provides the process background that must be confronted "new physics" models which postulate doubly charged particles, such as the gauge bilepton Y^{-} in the $SU(3)_{\rm c} \times SU(3)_{\rm L} \times U(1)$ model, the left-right $SU(2)_{\rm L} \times SU(2)_{\rm R} \times U(1)_{\rm B-L}$ one, and its supersymmetric version with doubly charged Higgs multiplets.

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