TY  - JOUR
AU  - Escudero, M.
AU  - Berlin, A.
AU  - Hooper, D.
AU  - Lin, M. X.
PY  - 2016
DA  - 2016//
TI  - Toward (finally!) ruling out Z and Higgs mediated dark matter models
T2  - J. Cosmol. Astropart. Phys.
JO  - Journal of Cosmology and Astroparticle Physics
SP  - 029
EP  - 21pp
VL  - 12
IS  - 12
PB  - Iop Publishing Ltd
KW  - dark matter theory
KW  - dark matter experiments
AB  - In recent years, direct detection, indirect detection, and collider experiments have placed increasingly stringent constraints on particle dark matter, exploring much of the parameter space associated with the WIMP paradigm. In this paper, we focus on the subset of WIMP models in which the dark matter annihilates in the early universe through couplings to either the Standard Model Z or the Standard Model Higgs boson. Considering fermionic, scalar, and vector dark matter candidates within a model-independent context, we fi nd that the overwhelming majority of these dark matter candidates are already ruled out by existing experiments. In the case of Z mediated dark matter, the only scenarios that are not currently excluded are those in which the dark matter is a fermion with an axial coupling and with a mass either within a few GeV of the Z resonance (m(D M) similar or equal to m(Z)/2) or greater than 200 GeV, or with a vector coupling and with m(DM) > 6TeV. Several Higgs mediated scenarios are currently viable if the mass of the dark matter is near the Higgs pole (m(DM) similar or equal to m(H) /2). Otherwise, the only scenarios that are not excluded are those in which the dark matter is a scalar (vector) heavier than 400 GeV (1160 GeV) with a Higgs portal coupling, or a fermion with a pseudoscalar (CP violating) coupling to the Standard Model Higgs boson. With the exception of dark matter with a purely pseudoscalar coupling to the Higgs, it is anticipated that planned direct detection experiments will probe nearly the entire range of models considered in this study.
SN  - 1475-7516
UR  - http://arxiv.org/abs/1609.09079
UR  - https://doi.org/10.1088/1475-7516/2016/12/029
DO  - 10.1088/1475-7516/2016/12/029
LA  - English
N1  - WOS:000398395400017
ID  - Escudero_etal2016
ER  -