M. Blasone, J. Magueijo and P. Pires-Pacheco, “Neutrino Mixing and Lorentz Invariance,” Europhysics Letters, Vol. 70, No. 5, 2005, pp. 600-607. doi:10.1209/epl/i2005-10027-1

has been cited by the following article:

• TITLE: Neutrino Oscillations and Superluminal Propagation, in OPERA or Otherwise

  AUTHORS: João Magueijo

  KEYWORDS: Neutrino Oscillations; Superluminal Propagation

  JOURNAL NAME: Journal of Modern Physics, Vol.4 No.1, January 28, 2013

  ABSTRACT: We digress on the implications of recent claims of superluminal neutrino propagation. No matter how we turn it around such behaviour is very odd and sits uncomfortably even within “far-fetched” theories. In the context of non-linear realizations of the Lorentz group (where superluminal misbehaviour is run of the mill) one has to accept rather contrived constructions to predict superluminal properties for the neutrino. The simplest explanation is to require that at least one of the mass states be tachyonic. We show that due to neutrino mixing, the flavor energy does not suffer from the usual runaway pathologies of tachyons. For non-tachyonic mass states the theories become more speculative. A neutrino specific dispersion relation is exhibited, rendering the amplitude of the effect reasonable for a standard Planck energy. This uses the fact that the beam energy is close to the geometrical average of the neutrino and Planck mass; or, seen in another way, the beam energy is unexceptional but its gamma factor is very large. A dispersion relation crossing over from a low energy bradyonic branch to a high energy tachyonic one is also considered. We comment on consistency with SN 1987Awithin these models.