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Unification of gauge couplings and the tau-neutrino mass in supergravity without R parity

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Unification of gauge couplings and the tau-neutrino mass in supergravity without R parity

dc.contributor.author	Díaz, Marco Aurelio
dc.contributor.author	Ferrandis Alapont, Francisco Javier
dc.contributor.author	Romao, J. C.
dc.contributor.author	Furtado Valle, José Wagner
dc.date.accessioned	2015-10-22T11:23:54Z
dc.date.available	2015-10-22T11:23:54Z
dc.date.issued	2000
dc.identifier.uri	http://hdl.handle.net/10550/47866
dc.description.abstract	Minimal R-parity violating supergravity predicts a value for alphas(MZ) smaller than in the case with conserved R-parity, and therefore closer to the experimental world average. We show that the R-parity violating effect on the alphas prediction comes from the larger two-loop b-quark Yukawa contribution to the renormalization group evolution of the gauge couplings which characterizes R-parity violating supergravity. The effect is correlated to the tau neutrino mass and is sensitive to the initial conditions on the soft supersymmetry breaking parameters at the unification scale. We show how a few percent effect on alphas(MZ) may naturally occur even with tau neutrino masses as small as indicated by the simplest neutrino oscillation interpretation of the atmospheric neutrino data from Super-Kamiokande.
dc.language.iso	eng
dc.relation.ispartof	Nuclear Physics B, 2000, vol. 590, num. 1-2, p. 3-18
dc.source	Díaz, Marco Aurelio Ferrandis Alapont, Francisco Javier Romao, J. C. Furtado Valle, José Wagner 2000 Unification of gauge couplings and the tau-neutrino mass in supergravity without R parity Nuclear Physics B 590 1-2 3 18
dc.subject	Física
dc.title	Unification of gauge couplings and the tau-neutrino mass in supergravity without R parity
dc.type	journal article	es_ES
dc.date.updated	2015-10-22T11:23:54Z
dc.identifier.doi	http://dx.doi.org/10.1016/S0550-3213(00)00464-8
dc.identifier.idgrec	072171
dc.rights.accessRights	open access	es_ES