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arXiv · 1705.09164

Status and prospects of light bino-higgsino dark matter in natural SUSY

Murat Abdughani·Lei Wu·Jin Min Yang
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Abstract

Given the recent progress in dark matter direction detection experiments, we examine a light bino-higgsino dark matter (DM) scenario ($M_1<100$ GeV and $μ<300$ GeV) in natural supersymmetry with the electroweak fine tuning measure $Δ_{EW}<30$. By imposing various constraints, we note that: (i) For $sign(μ/M_1)=+1$, the parameter space allowed by the DM relic density and collider bounds can almost be excluded by the very recent spin-independent (SI) scattering cross section limits from the XENON1T (2017) experiment. (ii) For $sign(μ/M_1)=-1$, the SI limits can be evaded due to the cancelation effects in the $h\tildeχ^0_1\tildeχ^0_1$ coupling, while rather stringent constraints come from the PandaX-II (2016) spin-dependent (SD) scattering cross section limits, which can exclude the higgsino mass $|μ|$ and the LSP mass $m_{\tildeχ^0_1}$ up to about 230 GeV and 37 GeV, respectively. Furthermore, the surviving parameter space will be fully covered by the projected XENON1T experiment or the future trilepton searches at the HL-LHC.

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Murat Abdughani, Lei Wu, Jin Min Yang. 2017-12-20. Status and prospects of light bino-higgsino dark matter in natural SUSY. https://doi.org/10.1140/epjc%2Fs10052-017-5485-2

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