Indirect Searches of the Degenerate MSSM

Abstract

A degenerate sfermionic particle spectrum can escape constraints from flavor physics, and at the same time evade the limits from the direct searches if the degeneracy extends to the gaugino-higgsino sector. Inspired by this, we consider a scenario where all the soft terms have an approximately common mass scale at $M_{\text{SUSY}}$, with splittings $\lesssim \mathcal{O}(10\%)$. As a result, the third generation sfermions have large to maximal (left-right) mixing, the same being the case with charginos and some sectors of the neutralino mass matrix. We study this scenario in the light of discovery of the Higgs boson with mass $\sim$ 125 GeV. We consider constraints from $B$-physics, the anomalous magnetic moment of the muon and the dark matter relic density. We find that a supersymmetric spectrum as light as 600 GeV could be consistent with all current data and also account for the observed anomalous magnetic moment of the muon within $2\sigma$. The neutralino relic density is generally too small to saturate the measured cold dark matter relic density. Direct detection limits from XENON100 and LUX put severe constraints on this scenario which will be conclusively probed by XENONnT experiment.

27 pages, 8 figures; Comments welcome

References in corpus (25)

• Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
• Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
• Results from a search for dark matter in the complete LUX exposure
• Dark Matter Results from 225 Live Days of XENON100 Data
• Combined Measurement of the Higgs Boson Mass in $pp$ Collisions at $\sqrt{s}=7$ and 8 TeV with the ATLAS and CMS Experiments
• Precise determination of the mass of the Higgs boson and tests of compatibility of its couplings with the standard model predictions using proton collisions at 7 and 8 TeV
• Estimate of BR(B -> X_s gamma) at O(alpha_s^2)
• Dark Matter Results from First 98.7-day Data of PandaX-II Experiment
• Updated NNLO QCD predictions for the weak radiative B-meson decays
• Search for direct production of charginos, neutralinos and sleptons in final states with two leptons and missing transverse momentum in pp collisions at sqrt(s) = 8 TeV with the ATLAS detector
• Search for pair-produced third-generation squarks decaying via charm quarks or in compressed supersymmetric scenarios in $pp$ collisions at $\sqrt{s}=8$TeV with the ATLAS detector
• The Higgs sector of the phenomenological MSSM in the light of the Higgs boson discovery
• Contributions of axion-like particles to lepton dipole moments
• Monojet plus soft dilepton signal from light higgsino pair production at LHC14
• Indirect Probes of the MSSM after the Higgs Discovery
• MSSM Higgs Bosons at The LHC
• Light non-degenerate squarks at the LHC
• Search for heavy long-lived charged $R$-hadrons with the ATLAS detector in 3.2 fb${}^{-1}$ of proton--proton collision data at $\sqrt{s}=13$ TeV
• Gluino Annihilations and Neutralino Dark Matter
• Low Mass Gluino within the Sparticle Landscape, Implications for Dark Matter, and Early Discovery Prospects at LHC-7
• Electroweakino constraints from LHC data
• Measuring Modular Weights in Mirage Unification Models at the LHC and ILC
• Upper bounds on sparticle masses from muon g-2 and the Higgs mass and the complementarity of future colliders
• Collider and Dark Matter Searches in Models with Mixed Modulus-Anomaly Mediated SUSY Breaking
• Mixed Bino-Wino-Higgsino Dark Matter in Gauge Messenger Models

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• Current bounds and future prospects of light neutralino dark matter in NMSSM
• Search for a compressed supersymmetric spectrum with a light Gravitino
• Improving sensitivity of trilinear RPV SUSY searches using machine learning at the LHC
• Slepton searches in the trilinear RPV SUSY scenarios at the HL-LHC and HE-LHC
• Inverse seesaw mechanism with compact supersymmetry: enhanced naturalness and light super-partners
• Search for R-Parity-Violation-Induced Charged Lepton Flavor Violation at Future Lepton Colliders