Possible exotic neutrino signature in electron muon collisions

Details Possible exotic neutrino signature in electron muon collisions Possible exotic neutrino signature in electron muon collisions

2007-03-13

arxiv.org/abs/hep-ph/0703136v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

21 pages, 5 figures, 1 table

Scientific paper

With the strong experimental evidence for standard neutrino mass and mixings, there exists now a possibility of the lepton flavor violating process e\sup + mu \sup - \arrow W \sup + W \sup -, which would occur via t-channel neutrino exchange induced by neutrino mixings. We consider Langackers generalized neutrino mixings including ordinary (canonical SU(2) \sub L x U(1) \sub Y assignments), exotic (non-canonical SU(2) \sub L x U(1) \sub Y assignments) and singlet neutrinos leading to light and heavy mass eigen states. Constraints on lepton flavor violating (LFV) ordinary and heavy neutrino overlap parameters are obtained by using the current experimental bounds on LFV process Mu \arrow e gamma . These constraints are used to analyze the dependence of differential cross section and angular distribution, for the process e\sup + mu \sup - \arrow W \sup + W \sup -, on the mass of heavy (exotic) neutrino and c. m. energy (sqrt(s)). The possibility of obtaining signatures of exotic neutrino mixings at e - Mu collider is discussed.

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