$e^- e^-$ Collisions Mediated by Composite Neutrinos

Details $e^- e^-$ Collisions Mediated by Composite Neutrinos $e^- e^-$ Collisions Mediated by Composite Neutrinos

1998-04-07

arxiv.org/abs/hep-ph/9804245v1

Prog.Theor.Phys. 100 (1998) 607-614

Physics

High Energy Physics

High Energy Physics - Phenomenology

9pages

Scientific paper

10.1143/PTP.100.607

The lepton number violating process, $e^- e^- \to W^- W^-$ has been widely discussed in the Majorana neutrino exchange mechanism. Here, we discuss this process in a composite neutrino model where excited Majorana neutrinos are exchanged. We found several qualitatively different features from the neutrino exchange case: (1) The longitudinally polarized $W$'s are not produced, (2) the neutrinoless double beta decay does not constrain much and a much larger cross section is expected, and (3) CP violating phases may be explored because all excited neutrinos are heavy so that large mixings among them are expected.

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