The Dark Penguin Shines Light at Colliders
arXiv:1503.04204
Abstract
Collider experiments are one of the most promising ways to constrain Dark Matter (DM) interactions. For several types of DM-Standard Model couplings, a meaningful interpretation of the results requires to go beyond effective field theory, considering simplified models with light mediators. This is especially important in the case of loop-mediated interactions. In this paper we perform the first simplified model study of the magnetic dipole interacting DM, by including the one-loop momentum-dependent form factors that mediate the coupling -- given by the Dark Penguin -- in collider processes. We compute bounds from the monojet, monophoton, and diphoton searches at the and TeV LHC, and compare the results to those of direct and indirect detection experiments. Future searches at the TeV hadron collider and at the ILC are also addressed. We find that the optimal search strategy requires loose cuts on the missing transverse energy, to capture the enhancement of the form factors near the threshold for on-shell production of the mediators. We consider both minimal models and models where an additional state beyond the DM is accessible. In the latter case, under the assumption of anarchic flavor structure in the dark sector, the LHC monophoton and diphoton searches will be able to set much stronger bounds than in the minimal scenario. A determination of the mass of the heavier dark fermion might be feasible using the variable. In addition, if the Dark Penguin flavor structure is almost aligned with that of the DM mass, a displaced signal from the decay of the heavier dark fermion into the DM and photon can be observed. This allows us to set constraints on the mixings and couplings of the model from an existing search for non-pointing photons.
arXiv comment32 pages + appendices and references, 22 figures
References in corpus (58)
- PYTHIA 6.4 Physics and Manual
- PYTHIA 6.2 Physics and Manual
- DELPHES 3, A modular framework for fast simulation of a generic collider experiment
- FeynRules 2.0 - A complete toolbox for tree-level phenomenology
- First results from the LUX dark matter experiment at the Sanford Underground Research Facility
- Dark Matter Results from 225 Live Days of XENON100 Data
- MCFM for the Tevatron and the LHC
- Constraints on Dark Matter from Colliders
- Search for Low-Mass WIMPs with SuperCDMS
- A search for light dark matter in XENON10 data
- Results from a Low-Energy Analysis of the CDMS II Germanium Data
- Missing Energy Signatures of Dark Matter at the LHC
- The Tevatron at the Frontier of Dark Matter Direct Detection
- Constraints on Light Majorana Dark Matter from Colliders
- CDMSlite: A Search for Low-Mass WIMPs using Voltage-Assisted Calorimetric Ionization Detection in the SuperCDMS Experiment
- On the Validity of the Effective Field Theory for Dark Matter Searches at the LHC
- Gluino Stransverse Mass
- Search for dark matter in events with a hadronically decaying W or Z boson and missing transverse momentum in pp collisions at sqrt(s)=8 TeV with the ATLAS detector
- Characterising dark matter searches at colliders and direct detection experiments: Vector mediators
- On the Validity of the Effective Field Theory for Dark Matter Searches at the LHC, Part II: Complete Analysis for the s-channel
- Dark Matter at Colliders: a Model-Independent Approach
- Unitarity and Monojet Bounds on Models for DAMA, CoGeNT, and CRESST-II
- Magnetic Inelastic Dark Matter
- Fermion Portal Dark Matter
- Probing dark matter couplings to top and bottom at the LHC
- Dark matter with -channel mediator: a simple step beyond contact interaction
- Collider searches for dark matter in events with a Z boson and missing energy
- Mono-Higgs Detection of Dark Matter at the LHC
- Collider Constraints on Dipole-Interacting Dark Matter
- Taking a Razor to Dark Matter Parameter Space at the LHC
- Robust collider limits on heavy-mediator Dark Matter
- Searching for Dark Matter at the LHC with a Mono-Z
- Contact Interactions Probe Effective Dark Matter Models at the LHC
- Bounds on Dark Matter Interactions with Electroweak Gauge Bosons
- Interplay and Characterization of Dark Matter Searches at Colliders and in Direct Detection Experiments
- Search for non-pointing and delayed photons in the diphoton and missing transverse momentum final state in 8 TeV collisions at the LHC using the ATLAS detector
- UV Completions of Magnetic Inelastic Dark Matter and RayDM for the Fermi Line(s)
- Dark Matter Search at a Linear Collider: Effective Operator Approach
- Generating X-ray lines from annihilating dark matter
- Direct Detection of Dark Matter Electromagnetic Dipole Moments
- LHC constraints on gauge boson couplings to dark matter
- Wγγproduction with leptonic decays at NLO QCD
- Dark matter detection in two easy steps
- Dipole Moment Dark Matter at the LHC
- LHC Bounds on UV-Complete Models of Dark Matter
- Magnetic dark matter for the X-ray line at 3.55 keV
- Inelastic Dark Matter at the LHC
- Looking for new charged states at the LHC: Signatures of Magnetic and Rayleigh Dark Matter
- X-ray Line from the Dark Transition Electric Dipole
- Confronting the Fermi Line with LHC data: an Effective Theory of Dark Matter Interaction with Photons
- Non-abelian Dark Matter Solutions for Galactic Gamma-ray Excess and Perseus 3.5 keV X-ray Line
- Dark Matter Signals in Dilepton Production at Hadron Colliders
- Sensitivity of future collider facilities to WIMP pair production via effective operators and light mediators
- LUX Constraints on Magnetic Dark Matter in the y Model with(out) Naturality
- Hidden Dipole Dark Matter
- Dark matter coupling to electroweak gauge and Higgs bosons: an effective field theory approach
- Effective Theories of Gamma-ray Lines from Dark Matter Annihilation
- Magnetic dipole moment of neutral particles from quantum corrections at two-loop order