Quark antiquark annihilation and Dark Matter

The Standard Model (SM) fails at providing a dark matter candidate, it is necessary to consider scenarios beyond the Standard Model, which may in addition have a broad phenomenology at colliders. Since dark matter density has been very precisely measured by cosmological observations, it can be used to

set constraints not only on particle physics models, but also on early Universe scenarios. Unknown are the nature of dark energy, the origin of the particle-antiparticle asymmetry in the Universe, and the reasons of the inflationary period.  A model is put forth which deals with collision and annihilation of heavy quark and antiquark particles