Lorentz-violating neutral-pion decays in isotropic modified Maxwell theory

Abstract

We consider an extension of the Standard Model with isotropic nonbirefringent Lorentz violation in the photon sector and restrict the discussion to the case of a "fast" photon with a phase velocity larger than the maximum attainable velocity of the quarks and leptons. With our conventions, this case corresponds to a negative Lorentz-violating parameter $\kappa$ in the action. The decay rate of a neutral pion into two nonstandard photons is calculated as a function of the 3-momentum of the initial pion and the negative Lorentz-violating parameter $\kappa$ of the final photons.

5 pages, v4: published version

References in corpus (3)

• Consistency of isotropic modified Maxwell theory: Microcausality and unitarity
• Improved bound on isotropic Lorentz violation in the photon sector from extensive air showers
• Changes in extensive air showers from isotropic Lorentz violation in the photon sector

Cited by in corpus (1)

• Changes in extensive air showers from isotropic Lorentz violation in the photon sector