Dispersion Relations Explaining OPERA Data From Deformed Lorentz Transformation

TL;DR

This paper explores how deformed Lorentz symmetry can produce dispersion relations that explain OPERA's superluminal neutrino data without conflicting with established physics laws, by modifying conservation laws.

Contribution

It demonstrates that dispersion relations from deformed Lorentz symmetry can be consistent with neutrino data and provides a method to derive these relations from observed superluminal velocities.

Findings

Deformed Lorentz symmetry allows superluminal neutrino velocities without conflicting with other physics laws.

Dispersion relations can be uniquely determined from the superluminal velocity as a function of energy.

The approach avoids conflicts present in Lorentz-violating theories.

Abstract

OPERA collaboration has reported evidence of superluminal phenomenon for neutrinos. One of the possible ways to explain the superluminality is to have Lorentz symmetry violated. It has been shown that dispersion relations put forwards has the problem of physics laws vary in different inertial frames leading to conflicting results on Cherenkov-like radiation, pion decay and high energy neutrino cosmic ray. For theories with deformed Lorentz symmetry, by modifying conservation laws corresponding to energy and momentum in the usual Lorentz invariant theory, it is possible to have superluminal effect and at the same time avoid to have conflicts encountered in Lorentz violating theories. We study dispersion relations from deformed Lorentz symmetry. We find that it is possible to have dispersion relations which can be consistent with data on neutrinos. We show that once the superluminality $\delta v$ as a function of energy is known the corresponding dispersion relation in the deformed Lorentz symmetry can be determined.