Cosmological implications of Dark Matter bound states

Andrea Mitridate, Michele Redi, Juri Smirnov, Alessandro Strumia
2017 Journal of Cosmology and Astroparticle Physics  
We present generic formulae for computing how Sommerfeld corrections together with bound-state formation affects the thermal abundance of Dark Matter with non-abelian gauge interactions. We consider DM as a fermion 3plet (wino) or 5plet under SU(2)$_L$. In the latter case bound states raise to 14 TeV the DM mass required to reproduce the cosmological DM abundance and give indirect detection signals such as (for this mass) a dominant $\gamma$-line around 85 GeV. Furthermore, we consider DM
more » ... e consider DM co-annihilating with a colored particle, such as a squark or a gluino, finding that bound state effects are especially relevant in the latter case.
doi:10.1088/1475-7516/2017/05/006 fatcat:4hwscoh6brbwbkbjyjul665e6i