Stellar Bounds on a Model with Photon-Photino Oscillation

TL;DR

This paper investigates photon-photino mixing induced by Lorentz-symmetry violation in a supersymmetric framework, deriving bounds from stellar physics and solar data.

Contribution

It introduces a novel Lorentz-violating background in supersymmetry leading to photon-photino mixing and derives astrophysical bounds on this effect.

Findings

Bounds on Lorentz-symmetry violation parameters from stellar energy loss.

Photon-photino mixing matrix characterized in the context of stellar physics.

Constraints derived using solar data and energy loss arguments.

Abstract

In this paper, we pursue an investigation of the consequences of a mixing between supersymmetric partners - the photon and photino - analogous to the so-called Primakoff effect, but induced by a Lorentz-symmetry violating (LSV) fermionic-condensate background. In our framework, the LSV parameters are introduced as members of a non-dynamical superfield. As a consequence, we show that naturally there appears a mixing term between the gauge boson and the gaugino, which can be readily seen in the superspace/superfield approach. We inspect the kinetic photon-photino mixing matrix in the scenario of stellar physics which we apply our results to. Bounds on the strength of the fermionic LSV background are can be set by invoking the energy loss argument and the solar data we adopt.