Ultralight Particle Dark Matter
Abstract
We review the physics case for very weakly coupled ultralight particles beyond the Standard Model, in particular for axions and axion-like particles (ALPs): (i) the axionic solution of the strong CP problem and its embedding in well motivated extensions of the Standard Model; (ii) the possibility that the cold dark matter in the Universe is comprised of axions and ALPs; (iii) the ALP explanation of the anomalous transparency of the Universe for TeV photons; and (iv) the axion or ALP explanation of the anomalous energy loss of white dwarfs. Moreover, we present an overview of ongoing and near-future laboratory experiments searching for axions and ALPs: haloscopes, helioscopes, and light-shining-through-a-wall experiments.
Cite
@article{arxiv.1310.1256,
title = {Ultralight Particle Dark Matter},
author = {A. Ringwald},
journal= {arXiv preprint arXiv:1310.1256},
year = {2013}
}
Comments
8 pages, 2 figures, based on invited plenary talk at 25th Rencontres de Blois on "Particle Physics and Cosmology", Blois, France,May 26-31, 2013