6533b85bfe1ef96bd12bac92
RESEARCH PRODUCT
Beyond the dark matter effective field theory and a simplified model approach at colliders
Pyungwon KoChaehyun YuSeungwon BaekMyeonghun ParkMyeonghun ParkMyeonghun ParkWan-il Parksubject
PhysicsNuclear and High Energy PhysicsParticle physicsUnitarity010308 nuclear & particles physicsPhysics beyond the Standard ModelHigh Energy Physics::LatticeScalar (mathematics)High Energy Physics::PhenomenologyPropagatorFOS: Physical sciences01 natural scienceslcsh:QC1-999High Energy Physics - ExperimentHigh Energy Physics - PhenomenologyHigh Energy Physics - Experiment (hep-ex)High Energy Physics - Phenomenology (hep-ph)0103 physical sciencesEffective field theoryHiggs bosonHigh Energy Physics::ExperimentGauge theory010306 general physicslcsh:PhysicsGauge symmetrydescription
Direct detection of and LHC search for the singlet fermion dark matter (SFDM) model with Higgs portal interaction are considered in a renormalizable model where the full Standard Model (SM) gauge symmetry is imposed by introducing a singlet scalar messenger. In this model, direct detection is described by an effective operator m_q \bar{q} q \bar{\chi} \chi as usual, but the full amplitude for monojet + \not E_T involves two intermediate scalar propagators, which cannot be seen within the effective field theory (EFT) or in the simplified model without the full SM gauge symmetry. We derive the collider bounds from the ATLAS monojet + \not E_T as well as the CMS t\bar{t} + \not E_T data, finding out that the bounds and the interpretation of the results are completely different from those obtained within the EFT or simplified models. It is pointed out that it is important to respect unitarity, renormalizability and local gauge invariance of the SM.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2016-05-01 | Physics Letters B |