Quark-flavored scalar dark matter
Abstract
It is an intriguing possibility that dark matter (DM) could have flavor quantum numbers like the quarks. We propose and investigate a class of UV-complete models of this kind, in which the dark matter is in a scalar triplet of an SU(3) flavor symmetry, and interacts with quarks via a colored flavor-singlet fermionic mediator. Such mediators could be discovered at the LHC if their masses are TeV. We constrain the DM-mediator couplings using relic abundance, direct detection, and flavor-changing neutral-current considerations. We find that, for reasonable values of its couplings, scalar flavored DM can contribute significantly to the real and imaginary parts of the - mixing amplitude. We further assess the potential for such models to explain the galactic center GeV gamma-ray excess.
Keywords
Cite
@article{arxiv.1509.04271,
title = {Quark-flavored scalar dark matter},
author = {Bhubanjyoti Bhattacharya and James M. Cline and Alakabha Datta and Grace Dupuis and David London},
journal= {arXiv preprint arXiv:1509.04271},
year = {2015}
}
Comments
16 pages, 14 figures; added section on benchmark models and typographical errors corrected