Naturalness of Neutralino Dark Matter

Abstract

We investigate the level of fine-tuning of neutralino Dark Matter below 200 GeV in the low-energy phenomenological minimal supersymmetric Standard Model taking into account the newest results from XENON100 and the Large Hadron Collider as well as all other experimental bounds from collider physics and the cosmological abundance. We find that current and future direct Dark Matter searches significantly rule out a large area of the untuned parameter space, but solutions survive which do not increase the level of fine-tuning. As expected, the level of tuning tends to increase for lower cross-sections, but regions of resonant neutralino annihilation still allow for a band at light masses, where the fine-tuning stays small even below the current experimental limits for direct detection cross-sections. For positive values of the supersymmetric Higgs mass parameter μlarge portions of the allowed parameter space are excluded, but there still exist untuned solutions at higher neutralino masses which will essentially be ruled out if XENON1t does not observe a signal.For negative μuntuned solutions are not much constrained by current limits of direct searches and, if the neutralino mass was found outside the resonance regions, a negative μ-term would be favored from a fine-tuning perspective. Light stau annihilation plays an important role to fulfill the relic density condition in certain neutralino mass regions. Finally we discuss, in addition to the amount of tuning for certain regions in the neutralino mass-direct detection cross-section plane, the parameter mapping distribution if the allowed model parameter space is chosen to be scanned homogeneously (randomized).

v2: 29 pages, 16 figures. Published version

References in corpus (28)

• Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
• New results from DAMA/LIBRA
• Results from a Search for Light-Mass Dark Matter with a P-type Point Contact Germanium Detector
• micrOMEGAs2.0: a program to calculate the relic density of dark matter in a generic model
• Combined results of searches for the standard model Higgs boson in pp collisions at sqrt(s) = 7 TeV
• Combined search for the Standard Model Higgs boson using up to 4.9 fb-1 of pp collision data at sqrt(s) = 7 TeV with the ATLAS detector at the LHC
• Results from a Low-Energy Analysis of the CDMS II Germanium Data
• First Dark Matter Results from the XENON100 Experiment
• SuperIso v3.0: A program for calculating flavor physics observables in 2HDM and supersymmetry
• A Tentative Gamma-Ray Line from Dark Matter Annihilation at the Fermi Large Area Telescope
• First evidence for the decay Bs -> mu+ mu-
• Indirect search for dark matter with micrOMEGAs2.4
• Supersymmetry, Naturalness, and Signatures at the LHC
• Averages of b-hadron and c-hadron Properties at the End of 2007
• Search for squarks and gluinos with the ATLAS detector in final states with jets and missing transverse momentum using 4.7 fb^-1 of sqrt(s) = 7 TeV proton-proton collision data
• Search for the Standard Model Higgs boson in the diphoton decay channel with 4.9 fb-1 of pp collisions at sqrt(s) = 7 TeV with ATLAS
• Search for the standard model Higgs boson decaying into two photons in pp collisions at sqrt(s)=7 TeV
• Prospects and Blind Spots for Neutralino Dark Matter
• Strong constraints on the rare decays Bs -> mu+ mu- and B0 -> mu+ mu-
• Likelihood Functions for Supersymmetric Observables in Frequentist Analyses of the CMSSM and NUHM1
• Can neutralinos in the MSSM and NMSSM scenarios still be light?
• The Higgs Sector and Fine-Tuning in the pMSSM
• XENON100 Implications for Naturalness in the MSSM, NMSSM and lambda-SUSY
• Discussing direct search of dark matter particles in the Minimal Supersymmetric extension of the Standard Model with light neutralinos
• Light Neutralinos with Large Scattering Cross Sections in the Minimal Supersymmetric Standard Model
• Mixed sneutrino dark matter in light of the 2011 XENON and LHC results
• Light Neutralino Dark Matter in the pMSSM: Implications of LEP, LHC and Dark Matter Searches on SUSY Particle Spectra
• First LHC Constraints on Neutralinos

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• Top Squark Searches Using Dilepton Invariant Mass Distributions and Bino-Higgsino Dark Matter at the LHC
• Naturalness of MSSM dark matter
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• A radiatively generated source of flavor universal scalar soft masses
• The Dark Side of Electroweak Naturalness Beyond the MSSM
• Light right-handed Smuons at the LHC: Natural dark matter and $g_{\mu }-2$ in an unexplored realm of the pMSSM