Polarization of photons emitted by decaying dark matter
High Energy Physics - Phenomenology
2016-12-12 v2
Abstract
Radiatively decaying dark matter may be searched through investigating the photon spectrum of galaxies and galaxy clusters. We explore whether the properties of dark matter can be constrained through the study of a polarization state of emitted photons. Starting from the basic principles of quantum mechanics we show that the models of symmetric dark matter are indiscernible by the photon polarization. However, we find that the asymmetric dark matter consisted of Dirac fermions is a source of circularly polarized photons, calling for the experimental determination of the photon state.
Keywords
Cite
@article{arxiv.1610.04532,
title = {Polarization of photons emitted by decaying dark matter},
author = {W. Bonivento and D. Gorbunov and M. Shaposhnikov and A. Tokareva},
journal= {arXiv preprint arXiv:1610.04532},
year = {2016}
}