Non-minimally coupled vector boson dark matter

Abstract We consider a simple abelian vector dark matter (DM) model, where only the DM ( X ? ? ) couples non-minimally to scalar curvature R ?) of background spacetime via an operator form ? ?. By considering standard freeze-out scenario, we show, it is possible probe such coupled in direct detection experiments for coupling strength ??????(10 30 and mass m ? 55 TeV, satisfying Planck observed relic abundance perturbative unitarity. also discuss production freeze-in, governed by non-minimal coupling, that requires ? ?10 -5 produce over large range depending on choice reheating temperature. further even absence whole 2-to-2 scattering bath particles mediated massless gravitons.