Dark matter at the pseudoscalar Higgs resonance in the phenomenological MSSM and SUSY GUTs

作者：Anandakrishnan Archana^*; Shakya Bibhushan; Sinha Kuver

来源：Physical Review D - Particles, Fields, Gravitation and Cosmology, 2015, 91(3): 035029.

DOI：10.1103/PhysRevD.91.035029

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 SO(10) GUT model. In the pMSSM, for mu > 0, the entire parameter space lies above the coherent neutrino background and mostly within reach of XENON1T and LZ, while blind spots exist at m(A) > 800 GeV for mu < 0; the strongest constraints come from A/H -> tau tau searches at the LHC. For Yukawa unified models, the confluence of B-s -> mu(+)mu(-) 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.

• 出版日期2015-2-26