Abstract
We study dark matter at the MSSM pseudoscalar Higgs resonance (A funnel), which is one of the few remaining MSSM thermal dark matter candidates in the 100–1000 GeV range safe from direct detection constraints. To illustrate the various factors at play, this study is performed in two contrasting setups: a bottom-up phenomenological MSSM (pMSSM) approach that allows significant freedom and the top-down, highly constrained Yukawa unified GUT model. In the pMSSM, for , the entire parameter space lies above the coherent neutrino background and mostly within reach of XENON1T and LZ, while blind spots exist at for ; the strongest constraints come from searches at the LHC. For Yukawa unified models, the confluence of constraints, fits to the bottom quark and Higgs masses, and gluino mass bounds from the LHC result in a prediction: realizing the pseudoscalar resonance requires gaugino mass nonuniversality, with a mass ratio that is determined to within a small range.
- Received 16 December 2014
DOI:https://doi.org/10.1103/PhysRevD.91.035029
© 2015 American Physical Society