Eur. Phys. J. C (2012) 72: 1855
https://doi.org/10.1140/epjc/s10052-011-1855-3

Letter

Superluminal neutrinos from Lorentz-violating dimension-5 operators

¹ Departamento de Física, Universidade Federal de Campina Grande, Caixa Postal 10071, 58109-970, Campina Grande, Paraíba, Brazil
² Departamento de Ciências Exatas, Universidade Federal da Paraíba, 58297-000, Rio Tinto, Paraíba, Brazil

^* e-mail: fabrito@df.ufcg.edu.br

Received: 10 November 2011
Revised: 13 December 2011
Published online: 3 January 2012

Abstract

We consider Lorentz- and CPT-violating dimension-5 operators to address the issue of superluminal neutrinos recently pointed out in OPERA experiments. We assume these operators in the photon and neutrino sectors to be coupled to Lorentz-violating backgrounds in a preferred frame defined by a time-like direction. We show that such operators can produce a curve with OPERA’s slope that fits OPERA, MINOS and supernova SN1987a data.