Thermal WIMPs and the scale of new physics: global fits of Dirac dark matter effective field theories

Peter Athron , Neal Avis Kozar , Csaba Balázs , Ankit Beniwal , Sanjay Bloor , Torsten Bringmann , Joachim Brod , Christopher Chang , Jonathan M. Cornell , Ben Farmer , Andrew Fowlie , Tomás E. Gonzalo , Will Handley , Felix Kahlhoefer , Anders Kvellestad , Farvah Mahmoudi (1) , Markus T. Prim , Are Raklev , Janina J. Renk , Andre Scaffidi , Pat Scott , Patrick Stöcker , Aaron C. Vincent , Martin White , Sebastian Wild , Jure Zupan

1 IP2I Lyon - Institut de Physique des 2 Infinis de Lyon

We assess the status of a wide class of WIMP dark matter (DM) models in light of the latest experimental results using the global fitting framework GAMBIT. We perform a global analysis of effective field theory (EFT) operators describing the interactions between a gauge-singlet Dirac fermion and the Standard Model quarks, the gluons and the photon. In this bottom-up approach, we simultaneously vary the coefficients of 14 such operators up to dimension 7, along with the DM mass, the scale of new physics and several nuisance parameters. Our likelihood functions include the latest data from Planck, direct and indirect detection experiments, and the LHC. For DM masses below 100 GeV, we find that it is impossible to satisfy all constraints simultaneously while maintaining EFT validity at LHC energies. For new physics scales around 1 TeV, our results are influenced by several small excesses in the LHC data and depend on the prescription that we adopt to ensure EFT validity. Furthermore, we find large regions of viable parameter space where the EFT is valid and the relic density can be reproduced, implying that WIMPs can still account for the DM of the universe while being consistent with the latest data.

Mots clés: scale: new physics; fermion: Dirac; top: mass; dark matter: halo; dimension: 7; jet: single production; dark matter: mass; WIMP: dark matter; effective field theory: nonrelativistic; dark matter: scattering; nucleus: form factor; interpretation of experiments: CERN LHC Coll; quark; dark matter: relic density; ATLAS; renormalization group; experimental results; satellite: Planck

Domaines: Physique des Hautes Energies - Phénoménologie [hep-ph]; Astrophysique [astro-ph]

Peter Athron, Neal Avis Kozar, Csaba Balázs, Ankit Beniwal, Sanjay Bloor, et al.. Thermal WIMPs and the scale of new physics: global fits of Dirac dark matter effective field theories. Eur.Phys.J.C, 2021, 81 (11), pp.992. ⟨10.1140/epjc/s10052-021-09712-6⟩. ⟨hal-03266146⟩