Supersymmetric threshold corrections to Δm^2_{\odot}

Abstract

For nearly degenerate neutrinos, quantum corrections can modify the tree-levelmasses via low energy supersymmetric threshold corrections comparable to the solar oscillation mass scale. We numerically calculate corrections to neutrino masses in minimal supergravity (mSugra) and Gauge Mediated Supersymmetry Breaking (GMSB) scenarios and identify parameter spaces in the high energy regime for which the solar neutrino mass splitting becomes too large compared to the LMA solution. We show that such considerations can give bounds on GMSB and mSugra models which can be useful. On the contrary, if we start from degenerate mass eigenvalues at the tree level, these threshold corrections being generation dependent, can also produce the required mass splitting at solar scale for regions of parameter space.

Revised version, Accepted for publication in Physics Letters B

References in corpus (8)

• First Results from KamLAND: Evidence for Reactor Anti-Neutrino Disappearance
• Underlying A_4 Symmetry for the Neutrino Mass Matrix and the Quark Mixing Matrix
• Running Neutrino Masses, Mixings and CP Phases: Analytical Results and Phenomenological Consequences
• Neutrino masses and the number of neutrino species from WMAP and 2dFGRS
• Testing Higgs Triplet Model and Neutrino Mass Patterns
• The All-Purpose Neutrino Mass Matrix
• Upper limits on neutrino masses from the 2dFGRS and WMAP: the role of priors
• Reconstructing Neutrino Properties from Collider Experiments in a Higgs Triplet Neutrino Mass Model

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