Influence of the left-handed part of the neutrino mass matrix on the lepton number violating e-e- -> W-W- process

Abstract

Influence of the neutrino mass submatrix $M_L$ on the e-e- -> W-W- process is discussed. Taking into account various possible CP signatures of heavy neutrinos it is shown that, in some cases, nonzero $M_L$ substantially changes predictions for maximum possible values of the e-e- -> W-W- cross section. A direct role of the ${\omega }^2$ parameter (coming from neutrinoless double beta decay) is clarified. The consequences of doubly charged Higgs particles ${\delta }^{--}$ with resonances even far away from energies of the future linear lepton collider ($\sqrt{s}=0.5-1$ TeV) are studied.

revtex, epsfig, 5 figures, 9 pages. To appear in Phys.Rev.D

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