Investigation of the nature of a massive vector mediator for dark matter through e+e− collisions.

Our work aims to investigate the interaction between fermions and dark matter (DM) particles in electron‐positron collisions through interaction of a new massive vector mediator, Z′. The production of scalar, fermionic, and vector DM pairs via electron‐positron annihilation into the new boson is investigated, evaluating the total cross section in the center‐of‐mass frame. As a result, the possible values of the coupling constants between the DM and the Standard Model of the Elementary Particles particles are mapped according to the exclusion limits obtained by the CMS and ATLAS experiments and the Planck satellite. We show that there are several possibilities for mass ranges of this new massive mediator and for the DM particles, which are not excluded by collider and astrophysical limits. [ABSTRACT FROM AUTHOR]