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Non-decoupling and lepton number violation in left-right models
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Non-decoupling and lepton number violation in left-right models
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| Barenboim Szuchman, Gabriela Alejandra Perfil; Raidal, Martti | |||
| This document is a artículoDate1997 | |||
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Este documento está disponible también en : http://hdl.handle.net/10550/53209 |
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| We argue that large non-decoupling effects of heavy neutrinos can appear naturally in manifestly left-right symmetric models due to the minimization conditions of the scalar potential and the structure of vev's imposed by phenomenology. We derive constraints on off-diagonal light-heavy and heavy-heavy neutrino mixings from the searches for lepton violating decays mu --> e gamma, mu --> ee(-)e(+) and mu - e conversion in nuclei. The most stringent limits come from the latter process ee e because its amplitude shows a quadratic non-decoupling dependence on the heavy neutrino mass. Due to the suppression of right-handed currents by the large W-R mass the present experiments are not sensitive to the intergenerational mixings between heavy neutrinos if M(WR) > 200 TeV. | |||
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Barenboim Szuchman, Gabriela Alejandra Raidal, Martti 1997 Non-decoupling and lepton number violation in left-right models Nuclear Physics B 484 1-2 63 79 |
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| http://dx.doi.org/10.1016/S0550-3213(96)00645-1 |
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