Effective scalar four-fermion interaction for Ge-phobic exothermic dark matter and the CDMS-II Silicon excess
arXiv:1411.3683 · doi:10.1103/PhysRevD.91.015019
Abstract
We discuss within the framework of effective four-fermion scalar interaction the phenomenology of a Weakly Interacting Massive Particle (WIMP) Dirac Dark Matter candidate which is exothermic (i.e. is metastable and interacts with nuclear targets down-scattering to a lower-mass state) and -phobic (i.e. whose couplings to quarks violate isospin symmetry leading to a suppression of its cross section off Germanium targets). We discuss the specific example of the CDMS-II Silicon three-candidate effect showing that a region of the parameter space of the model exists where WIMP scatterings can explain the excess in compliance with other experimental constraints, while at the same time the Dark Matter particle can have a thermal relic density compatible with observation. In this scenario the metastable state and the lowest-mass one have approximately the same density in the present Universe and in our Galaxy, but direct detection experiments are only sensitive to the down-scatters of to . We include a discussion of the recently calculated Next-to-Leading Order corrections to Dark Matter-nucleus scattering, showing that their impact on the phenomenology is typically small, but can become sizable in the same parameter space where the thermal relic density is compatible to observation.
arXiv comment19 pages, 7 figures. References added, updated to published version
References in corpus (59)
- PYTHIA 6.4 Physics and Manual
- PYTHIA 6.2 Physics and Manual
- The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
- Planck 2013 results. XVI. Cosmological parameters
- A Brief Introduction to PYTHIA 8.1
- New Generation of Parton Distributions with Uncertainties from Global QCD Analysis
- DELPHES 3, A modular framework for fast simulation of a generic collider experiment
- First results from the LUX dark matter experiment at the Sanford Underground Research Facility
- Dark Matter Results from 225 Live Days of XENON100 Data
- Inelastic Dark Matter
- New results from DAMA/LIBRA
- Results from 730 kg days of the CRESST-II Dark Matter Search
- 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
- The Tevatron at the Frontier of Dark Matter Direct Detection
- Constraints on Light Majorana Dark Matter from Colliders
- CoGeNT: A Search for Low-Mass Dark Matter using p-type Point Contact Germanium Detectors
- Search for dark matter, extra dimensions, and unparticles in monojet events in proton-proton collisions at sqrt(s) = 8 TeV
- CDMSlite: A Search for Low-Mass WIMPs using Voltage-Assisted Calorimetric Ionization Detection in the SuperCDMS Experiment
- Isospin-Violating Dark Matter
- On the Validity of the Effective Field Theory for Dark Matter Searches at the LHC
- Search for dark matter and large extra dimensions in monojet events in pp collisions at sqrt(s) = 7 TeV
- Search for dark matter candidates and large extra dimensions in events with a jet and missing transverse momentum with the ATLAS detector
- 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
- On the Validity of the Effective Field Theory for Dark Matter Searches at the LHC, Part II: Complete Analysis for the s-channel
- New Limits on Interactions between Weakly Interacting Massive Particles and Nucleons Obtained with CsI(Tl) Crystal Detectors
- Unitarity and Monojet Bounds on Models for DAMA, CoGeNT, and CRESST-II
- Integrating Out Astrophysical Uncertainties
- On the Validity of the Effective Field Theory for Dark Matter Searches at the LHC Part III: Analysis for the -channel
- Likelihood Approach to the First Dark Matter Results from XENON100
- Resolving astrophysical uncertainties in dark matter direct detection
- WIMP-nucleus scattering in chiral effective theory
- Search for dark matter in events with a Z boson and missing transverse momentum in pp collisions at =8 TeV with the ATLAS detector
- Exothermic Dark Matter
- Searches with Mono-Leptons
- The unbearable lightness of being: CDMS versus XENON
- Halo independent comparison of direct dark matter detection data
- Twenty-first Century Lattice Gauge Theory: Results from the QCD Lagrangian
- Exothermic Double-Disk Dark Matter
- Halo-independent methods for inelastic dark matter scattering
- DAMA and CoGeNT without astrophysical uncertainties
- Halo-independent analysis of direct detection data for light WIMPs
- A New Direction in Dark-Matter Complementarity: Dark-Matter Decay as a Complementary Probe of Multi-Component Dark Sectors
- Search for An Annual Modulation in Three Years of CoGeNT Dark Matter Detector Data
- Shining LUX on Isospin-Violating Dark Matter Beyond Leading Order
- Search for annual modulation in low-energy CDMS-II data
- Update on Light WIMP Limits: LUX, lite and Light
- Quantifying the evidence for Dark Matter in CoGeNT data
- Analysis of the low-energy electron-recoil spectrum of the CDMS experiment
- A systematic halo-independent analysis of direct detection data within the framework of Inelastic Dark Matter
- A Realistic Assessment of the Sensitivity of XENON10 and XENON100 to Light-Mass WIMPs
- Light WIMP Searches: The Effect of the Uncertainty in Recoil Energy Scale and Quenching Factor
- Direct Detection of Light "Ge-phobic" Exothermic Dark Matter
- Using Effective Operators to Understand CoGeNT and CDMS-Silicon
- The Up-Shot of Inelastic Down-Scattering at CDMS-Si
- Exothermic isospin-violating dark matter after SuperCDMS and CDEX
- Collider Constraints on the Dark Matter Interpretation of the CDMS II Results