Model Independent Analysis of Interactions between Dark Matter and Various Quarks

TL;DR

This paper provides a comprehensive, model-independent analysis of dark matter interactions with various quarks, using LHC data and comparing constraints from collider, cosmological, and astrophysical observations.

Contribution

It introduces a method to derive model-independent limits on dark matter-quark interactions at the LHC and compares these with cosmological and astrophysical constraints.

Findings

Derived upper limits on non-standard model event cross sections at 7, 8, and 14 TeV LHC energies.

Placed constraints on operators for dark matter interactions with all quark flavors.

Compared collider constraints with cosmological and astrophysical observations.

Abstract

Present and future expected limits on interactions between dark matter and various quarks are thoroughly investigated in a model-independent way. In particular, the constraints on the interactions from the Large Hadron Collider (LHC) experiment are carefully considered with focusing on mono jet + missing transverse energy, mono b-jet + missing transverse energy, and top quark(s) + missing transverse energy channels. Model-independent upper limits (expected limits) on the cross section times acceptance for non-standard model events are derived at 7 TeV (8 or 14 TeV) running of the LHC experiment. With assuming that the dark matter is a singlet real scalar or a singlet Majorana fermion, we also put constraints on several operators describing its interactions with up, down, strange, charm, bottom and top quarks. These constraints are compared to those obtained by cosmological and astrophysical observations of the dark matter.