Radiative magnification of neutrino mixings in split supersymmetry

Mohapatra, R. N. ; Parida, M. K. ; Rajasekaran, G. (2005) Radiative magnification of neutrino mixings in split supersymmetry Physical Review D, 72 (1). 013002_1-013002_9. ISSN 0556-2821

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Official URL: http://prd.aps.org/abstract/PRD/v72/i1/e013002

Related URL: http://dx.doi.org/10.1103/PhysRevD.72.013002

Abstract

Radiative corrections to neutrino mixings in seesaw models depend on the nature of new physics between the weak and the grand unified theory (GUT)-seesaw scales and can be taken into account using the renormalization group equations. This new physics effect becomes particularly important for models with quasidegenerate neutrino masses where small neutrino mixings at the seesaw scale can get magnified by radiative renormalization effects alone to match observations. This mechanism of radiative magnification which provides a simple understanding of why lepton mixings are so different from quark mixings was demonstrated by us for the standard supersymmetry (SUSY) scenario where the particle spectrum becomes supersymmetric above the weak scale. In this paper, we examine this phenomenon in split supersymmetry scenarios and find that the mechanism works also for this scenario provided the SUSY scale is at least 2-3 orders below the GUT-seesaw scale and one has larger values of tanβ.

Item Type:Article
Source:Copyright of this article belongs to The American Physical Society.
ID Code:41112
Deposited On:26 May 2011 12:37
Last Modified:17 May 2016 22:57

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