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Title: Effects of environment dependence of neutrino mass versus solar and reactor neutrino data

Abstract

In this work we study the phenomenological consequences of the environment dependence of neutrino mass on solar and reactor neutrino phenomenology. We concentrate on mass varying neutrino scenarios in which the environment dependence is induced by Yukawa interactions of a light neutral scalar particle which couples to neutrinos and matter. Under the assumption of one mass-scale dominance, we perform a global analysis of solar and KamLAND neutrino data which depends on 4 parameters: the two standard oscillation parameters, {delta}m{sub 0,21}{sup 2} and tan{sup 2}{theta}{sub 12}, and two new coefficients which parameterize the environment dependence of the neutrino mass. We find that, generically, the inclusion of the environment dependent terms does not lead to a very statistically significant improvement on the description of the data in the most favored MSW LMA (or LMA-I) region. It does, however, substantially improve the fit in the high-{delta}m{sup 2} LMA (or LMA-II) region which can be allowed at 98.9% CL. Conversely, the analysis allow us to place stringent constraints on the size of the environment dependence terms which can be translated on a bound on the product of the effective neutrino-scalar ({lambda}{sup {nu}}) and matter-scalar ({lambda}{sup N}) Yukawa couplings, as a function of the scalarmore » field mass (m{sub S}) in these models, |{lambda}{sup {nu}}{lambda}{sup N}|((10{sup -7}eV/m{sub S})){sup 2}{<=}3.0x10{sup -28} (at 90% CL)« less

Authors:
; ;  [1];  [2];  [3]
  1. IFIC, Universitat de Valencia - C.S.I.C., Apt 22085, E-46071 Valencia (Spain)
  2. (United States)
  3. (Brazil)
Publication Date:
OSTI Identifier:
20776641
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. D, Particles Fields; Journal Volume: 73; Journal Issue: 3; Other Information: DOI: 10.1103/PhysRevD.73.033008; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; 22 GENERAL STUDIES OF NUCLEAR REACTORS; COSMIC NEUTRINOS; NEUTRINO OSCILLATION; REST MASS; SCALAR FIELDS; SCALARS; STANDARD MODEL

Citation Formats

Gonzalez-Garcia, M.C., Holanda, P.C. de, Funchal, R. Zukanovich, C.N. Yang Institute for Theoretical Physics, SUNY at Stony Brook, Stony Brook, New York 11794-3840, and Instituto de Fisica, Universidade de Sao Paulo, C. P. 66.318, 05315-970 Sao Paulo. Effects of environment dependence of neutrino mass versus solar and reactor neutrino data. United States: N. p., 2006. Web. doi:10.1103/PhysRevD.73.033008.
Gonzalez-Garcia, M.C., Holanda, P.C. de, Funchal, R. Zukanovich, C.N. Yang Institute for Theoretical Physics, SUNY at Stony Brook, Stony Brook, New York 11794-3840, & Instituto de Fisica, Universidade de Sao Paulo, C. P. 66.318, 05315-970 Sao Paulo. Effects of environment dependence of neutrino mass versus solar and reactor neutrino data. United States. doi:10.1103/PhysRevD.73.033008.
Gonzalez-Garcia, M.C., Holanda, P.C. de, Funchal, R. Zukanovich, C.N. Yang Institute for Theoretical Physics, SUNY at Stony Brook, Stony Brook, New York 11794-3840, and Instituto de Fisica, Universidade de Sao Paulo, C. P. 66.318, 05315-970 Sao Paulo. Wed . "Effects of environment dependence of neutrino mass versus solar and reactor neutrino data". United States. doi:10.1103/PhysRevD.73.033008.
@article{osti_20776641,
title = {Effects of environment dependence of neutrino mass versus solar and reactor neutrino data},
author = {Gonzalez-Garcia, M.C. and Holanda, P.C. de and Funchal, R. Zukanovich and C.N. Yang Institute for Theoretical Physics, SUNY at Stony Brook, Stony Brook, New York 11794-3840 and Instituto de Fisica, Universidade de Sao Paulo, C. P. 66.318, 05315-970 Sao Paulo},
abstractNote = {In this work we study the phenomenological consequences of the environment dependence of neutrino mass on solar and reactor neutrino phenomenology. We concentrate on mass varying neutrino scenarios in which the environment dependence is induced by Yukawa interactions of a light neutral scalar particle which couples to neutrinos and matter. Under the assumption of one mass-scale dominance, we perform a global analysis of solar and KamLAND neutrino data which depends on 4 parameters: the two standard oscillation parameters, {delta}m{sub 0,21}{sup 2} and tan{sup 2}{theta}{sub 12}, and two new coefficients which parameterize the environment dependence of the neutrino mass. We find that, generically, the inclusion of the environment dependent terms does not lead to a very statistically significant improvement on the description of the data in the most favored MSW LMA (or LMA-I) region. It does, however, substantially improve the fit in the high-{delta}m{sup 2} LMA (or LMA-II) region which can be allowed at 98.9% CL. Conversely, the analysis allow us to place stringent constraints on the size of the environment dependence terms which can be translated on a bound on the product of the effective neutrino-scalar ({lambda}{sup {nu}}) and matter-scalar ({lambda}{sup N}) Yukawa couplings, as a function of the scalar field mass (m{sub S}) in these models, |{lambda}{sup {nu}}{lambda}{sup N}|((10{sup -7}eV/m{sub S})){sup 2}{<=}3.0x10{sup -28} (at 90% CL)},
doi = {10.1103/PhysRevD.73.033008},
journal = {Physical Review. D, Particles Fields},
number = 3,
volume = 73,
place = {United States},
year = {Wed Feb 01 00:00:00 EST 2006},
month = {Wed Feb 01 00:00:00 EST 2006}
}
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