NMSSM with Gravitino Dark Matter to be tested at LHC

Abstract

We present a solution to the gravitino problem, which arises in the NMSSM, allowing for sparticle spectra from ordinary gravity-mediated supersymmetry breaking with weak-scale gravitino dark matter. The coupling, which links the singlet to the MSSM sector, enhances the tree-level Higgs mass, providing an attractive explanation why the observed Higgs boson is so heavy. The same coupling induces very efficient pair-annihilation processes of the neutralino NLSP. Its relic abundance can be sufficiently suppressed to satisfy the strong constraints on late decaying relics from primordial nucleosynthesis -- even for very long neutralino lifetimes. The striking prediction of this scenario is the detection of a pseudoscalar Higgs boson in the search for top-top resonances at LHC-14, rendering it completely testable.

20 pages + refs, 9 figures

References in corpus (16)

• 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
• Big Bang Nucleosynthesis Constraints on Hadronically and Electromagnetically Decaying Relic Neutral Particles
• NMSPEC: A Fortran code for the sparticle and Higgs masses in the NMSSM with GUT scale boundary conditions
• Search for gluino mediated bottom- and top-squark production in multijet final states in pp collisions at 8 TeV
• Enhanced $h\to \gamma \gamma$ rate in MSSM singlet extensions
• Higgs pair production in the NMSSM at the LHC
• Dark Matter CMB Constraints and Likelihoods for Poor Particle Physicists
• Gravitino Dark Matter and general neutralino NLSP
• The number density of a charged relic
• One or more Higgs bosons?
• Leptogenesis, Gravitino Dark Matter and Entropy Production
• Effect of Long-lived Strongly Interacting Relic Particles on Big Bang Nucleosynthesis
• Simultaneous enhancement in gamma.gamma, b.b-bar and tau+.tau- rates in the NMSSM with nearly degenerate scalar and pseudoscalar Higgs bosons
• Supersymmetric mass spectra for gravitino dark matter with a high reheating temperature
• The degenerate gravitino scenario

Cited by in corpus (5)

• Dark matter production in the early Universe: beyond the thermal WIMP paradigm
• Exploring Spin-3/2 Dark Matter with Effective Higgs Couplings
• LHC constraints on Gravitino Dark Matter
• Dominant production of heavier Higgs bosons through vector boson fusion in NMSSM
• ATLAS on-Z Excess via gluino-Higgsino-singlino decay chains in the NMSSM