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Probing nonstandard neutrino-electron interactions with solar and reactor neutrinos

AuthorsBolaños, Azucena; Miranda, O. G. ; Palazzo, Antonio ; Tórtola, María Amparo ; Valle, José W. F.
Issue Date24-Jun-2009
PublisherAmerican Physical Society
CitationPhys. Rev. D 79, 113012 (2009)
AbstractMost neutrino mass extensions of the standard electroweak model entail nonstandard interactions which, in the low-energy limit, can be parametrized in term of effective four-fermion operators nu(alpha)nu(beta)ff. Typically of subweak strength epsilon(alpha beta)G(F), these are characterized by dimensionless coupling parameters epsilon(alpha beta), which may be relatively sizable in a wide class of schemes. Here we focus on nonuniversal flavor-conserving couplings (alpha=beta) with electrons (f=e) and analyze their impact on the phenomenology of solar neutrinos. We consistently take into account their effect both at the level of propagation, where they modify the standard Mikheev-Smirnov-Wolfenstein behavior, and at the level of detection, where they affect the cross section of neutrino elastic scattering on electrons. We find limits which are comparable to other existing model-independent constraints.
Description18 pages, 3 figures.-- ISI article identifier:000267701300027 .-- ArXiv pre-print avaible at:http://arxiv.org/abs/0812.4417
Publisher version (URL)http://dx.doi.org/10.1103/PhysRevD.79.113012
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