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Title: Bilarge neutrino mixing from supersymmetry with high scale nonrenormalizable interactions

Abstract

We suggest a supersymmetric (SUSY) explanation of neutrino masses and mixing, where nonrenormalizable interactions in the hidden sector generate lepton number violating Majorana mass terms for both right-chiral sneutrinos and neutrinos. It is found necessary to start with a superpotential including an array of gauge singlet chiral superfields. This leads to nondiagonal {delta}L=2 mass terms and almost diagonal SUSY breaking A-terms. As a result, the observed pattern of bilarge mixing can be naturally explained by the simultaneous existence of the seesaw mechanism and radiatively induced masses. Allowed ranges of parameters in the gauge singlet sector are delineated, corresponding to each of the cases of normal hierarchy, inverted hierarchy, and degenerate neutrinos.

Authors:
;  [1];  [2]
  1. Harish-Chandra Research Institute, Chhatnag Road, Jhusi, Allahabad-211 019 (India)
  2. Department of Theoretical Physics, Tata Institute of Fundamental Research, Homi Bhabha Road, Mumbai-400 005 (India)
Publication Date:
OSTI Identifier:
20776682
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.73.035003; (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; BASIC INTERACTIONS; CHIRALITY; LEPTON NUMBER; MIXING; NEUTRINOS; POTENTIALS; REST MASS; SUPERSYMMETRY

Citation Formats

Mukhopadhyaya, Biswarup, Srikanth, Raghavendra, and Roy, Probir. Bilarge neutrino mixing from supersymmetry with high scale nonrenormalizable interactions. United States: N. p., 2006. Web. doi:10.1103/PhysRevD.73.035003.
Mukhopadhyaya, Biswarup, Srikanth, Raghavendra, & Roy, Probir. Bilarge neutrino mixing from supersymmetry with high scale nonrenormalizable interactions. United States. doi:10.1103/PhysRevD.73.035003.
Mukhopadhyaya, Biswarup, Srikanth, Raghavendra, and Roy, Probir. Wed . "Bilarge neutrino mixing from supersymmetry with high scale nonrenormalizable interactions". United States. doi:10.1103/PhysRevD.73.035003.
@article{osti_20776682,
title = {Bilarge neutrino mixing from supersymmetry with high scale nonrenormalizable interactions},
author = {Mukhopadhyaya, Biswarup and Srikanth, Raghavendra and Roy, Probir},
abstractNote = {We suggest a supersymmetric (SUSY) explanation of neutrino masses and mixing, where nonrenormalizable interactions in the hidden sector generate lepton number violating Majorana mass terms for both right-chiral sneutrinos and neutrinos. It is found necessary to start with a superpotential including an array of gauge singlet chiral superfields. This leads to nondiagonal {delta}L=2 mass terms and almost diagonal SUSY breaking A-terms. As a result, the observed pattern of bilarge mixing can be naturally explained by the simultaneous existence of the seesaw mechanism and radiatively induced masses. Allowed ranges of parameters in the gauge singlet sector are delineated, corresponding to each of the cases of normal hierarchy, inverted hierarchy, and degenerate neutrinos.},
doi = {10.1103/PhysRevD.73.035003},
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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  • We consider the possibility of neutrino mass generation in a supersymmetric model where lepton number can be violated by odd units. The different patterns of mixing in the quark and lepton sectors are attributed to the presence of right-chiral neutrino superfields which (a) enter into Yukawa couplings via nonrenormalizable interaction with hidden sector fields, and (b) can violate lepton number by odd units. Both of these features are shown to be the result of some global quantum number which is violated when SUSY is broken in the hidden sector. It is shown how such a scenario, together with all knownmore » R-parity violating effects, can lead to neutrino masses and bilarge mixing via seesaw as well as radiative mechanisms. Some sample values of the various parameters involved, consistent with electroweak symmetry breaking constraints, are presented as illustrations.« less
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