https://doi.org/10.1140/epjc/s10052-015-3379-8
Regular Article - Experimental Physics
Searching for dark matter at colliders
1
Laboratoire de l’Accélérateur Linéaire, IN2P3/CNRS and Université Paris-Sud 11 Centre Scientifique d’Orsay, B. P. 34, 91898, Orsay Cedex, France
2
Laboratoire de Physique Théorique, Université Paris-Sud, 91405, Orsay, France
* e-mail: giorgio.arcadi@th.u-psud.fr
Received:
7
January
2015
Accepted:
30
March
2015
Published online:
28
April
2015
Dark Matter (DM) detection prospects at future 
colliders are reviewed under the assumption that DM particles are fermions of the Majorana or Dirac type. Although the discussion is quite general, one will keep in mind the recently proposed candidate based on an excess of energetic photons observed in the center of our Galaxy with the Fermi-LAT satellite. In the first part we will assume that DM interactions are mediated by vector bosons, 
or 
. In the case of -boson Direct Detection limits force only axial couplings with the DM. This solution can be naturally accommodated by Majorana DM but is disfavored by the GC excess. Viable scenarios can be instead found in the case of mediator. These scenarios can be tested at 
colliders through ISR events, 
. A sensitive background reduction can be achieved by using highly polarized beams. In the second part scalar particles, in particular Higgs particles, have been considered as mediators. The case of the SM Higgs mediator is excluded by limits on the invisible branching ratio of the Higgs. On the contrary particularly interesting is the case in which the DM interactions are mediated by the pseudoscalar state 
in two Higgs-doublet model scenarios. In this last case the main collider signature is 
.
© SIF and Springer-Verlag Berlin Heidelberg, 2015
