Dark matter candidates in the constrained Exceptional Supersymmetric Standard Model

Abstract

The Exceptional Supersymmetric Standard Model (E${}_6$SSM) is a low energy alternative to the MSSM with an extra $U(1)$ gauge symmetry and three generations of matter filling complete 27-plet representations of $E_6$. This provides both new D and F term contributions that raise the Higgs mass at tree level, and a compelling solution to the $\mu$-problem of the MSSM by forbidding such a term with the extra $U(1)$ symmetry. Instead, an effective $\mu$-term is generated from the VEV of an SM singlet which breaks the extra $U(1)$ symmetry at low energies, giving rise to a massive $Z^{\prime }$. We explore the phenomenology of the constrained version of this model (cE${}_6$SSM) in substantially more detail than has been carried out previously, performing a ten dimensional scan that reveals a large volume of viable parameter space. We classify the different mechanisms for generating the measured relic density of dark matter found in the scan, including the identification of a new mechanism involving mixed bino/inert-Higgsino dark matter. We show which mechanisms can evade the latest direct detection limits from the LUX 2016 experiment. Finally we present benchmarks consistent with all the experimental constraints and which could be discovered with the XENON1T experiment.

26 pages, 4 figures

References in corpus (30)

• 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
• Combined Measurement of the Higgs Boson Mass in $pp$ Collisions at $\sqrt{s}=7$ and 8 TeV with the ATLAS and CMS Experiments
• micrOMEGAs2.0: a program to calculate the relic density of dark matter in a generic model
• The Well-Tempered Neutralino
• Automatic Calculation of supersymmetric Renormalization Group Equations and Self Energies
• SARAH 3.2: Dirac Gauginos, UFO output, and more
• FlexibleSUSY -- A spectrum generator generator for supersymmetric models
• Higgs Sector in Extensions of the MSSM
• Z' physics with early LHC data
• Two-Loop Higgs mass calculations in supersymmetric models beyond the MSSM with SARAH and SPheno
• Theory and Phenomenology of Exotic Isosinglet Quarks and Squarks
• Precise Higgs mass calculations in (non-)minimal supersymmetry at both high and low scales
• Gauge Coupling Unification in the Exceptional Supersymmetric Standard Model
• Recoil Detection of the Lightest Neutralino in MSSM Singlet Extensions
• Minimal E_6 Supersymmetric Standard Model
• Leptogenesis in the Exceptional Supersymmetric Standard Model: flavour dependent lepton asymmetries
• The Neutralino Sector in the U(1)-Extended Supersymmetric Standard Model
• Novel Higgs Decays and Dark Matter in the E(6)SSM
• Generation Symmetry and E_6 Unification
• Neutralino Dark Matter with Inert Higgsinos and Singlinos
• Planck Scale Unification in a Supersymmetric Standard Model
• Limits on the Electromagnetic and Weak Dipole Moments of the Tau-Lepton in E_6 Superstring Models
• E${}_6$SSM
• Non-Standard Higgs Decays in U(1) Extensions of the MSSM
• TeV physics and the Planck scale
• Dark Matter in a Constrained $E_6$ Inspired SUSY Model
• Bino Dark Matter and Big Bang Nucleosynthesis in the Constrained E6SSM with Massless Inert Singlinos
• Novel gluino cascade decays in E6 inspired models
• Discovering $E_6$ SUSY models in gluino cascade decays at the LHC

Cited by in corpus (7)

• Detecting hidden sector dark matter at HL-LHC and HE-LHC via long-lived stau decays
• A long-lived stop with freeze-in and freeze-out dark matter in the hidden sector
• $E_6$ Motivated UMSSM Confronts Experimental Data
• Baryon asymmetry generation in the E6CHM
• Monophoton signals in electron-positron colliders in a simplified E6SSM
• Leptogenesis and Dark Matter-Nucleon Scattering Cross Section in the SE6SSM
• Vectorlike Particles, $Z^{\prime }$ and Yukawa Unification in F-theory inspired $E_6$