Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8132816 | Astroparticle Physics | 2015 | 10 Pages |
Abstract
We present a general parametrization for the leading order terms in a momentum power expansion of a non-universal Lorentz-violating, but rotational invariant, kinematics and its implications for two-body decay thresholds. The considered framework includes not only modified dispersion relations for particles, but also modified energy-momentum conservation laws, something which goes beyond effective field theory. As a particular and relevant example, bounds on the departures from special relativistic kinematics from the non-observation of vacuum Cherenkov radiation are discussed and compared with those obtained within the effective field theory scenario.
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Authors
J.M. Carmona, J.L. Cortés, B. Romeo,