Quark-flavored scalar dark matter

B Bhattacharya, D London, JM Cline, A Datta, G Dupuis - Physical Review D, 2015 - APS
B Bhattacharya, D London, JM Cline, A Datta, G Dupuis
Physical Review D, 2015APS
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∼ 1 TeV. We constrain the DM-mediator couplings using relic
abundance, direct detection, and flavor-changing neutral-current considerations. We find …
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 . 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.
American Physical Society