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Título : Bilinear R-parity violation and small neutrino masses : a self-consistent framework
Autor : Mira Martínez, Jesús María
Nardi, Enrico
Restrepo Quintero, Diego Alejandro
Valle, José W. F.
metadata.dc.subject.*: Neutrinos
R bilineal
Fecha de publicación : 2000
Editorial : Elsevier
Citación : Mira, J. M., Nardi, E., Restrepo Quintero, D. A., & Valle, J. W. F. (2000). Bilinear R-parity violation and small neutrino masses: a self-consistent framework. Physics Letters B. 492, 81-90.
Resumen : ABSTRACT: We study extensions of supersymmetric models without R-parity which include an anomalous U.1/H horizontal symmetry. Bilinear R-parity violating terms induce a neutrino mass at tree level mvtree ~~ (tetha2)& eV where tetha ~_ 0.22 is the U(1)H breaking parameter and & is an integer number that depends on the horizontal charges of the leptons. For &=1 a unique self-consistent model arises in which (i) all the superpotential trilinear R-parity violating couplings are forbidden by holomorphy; (ii) mvtree falls in the range suggested by the atmospheric neutrino problem; (iii) radiative contributions to neutrino masses are strongly suppressed resulting in m2 solar ~~ fe 10^8 eV2 which only allows for the LOW (or quasi-vacuum) solution to the solar neutrino problem; (iv) the neutrino mixing angles are not suppressed by powers of tetha and can naturally be large.
metadata.dc.identifier.eissn: 1873-2445
ISSN : 0370-2693
Aparece en las colecciones: Artículos de Revista en Ciencias Exactas y Naturales

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