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Is the light neutralino thermal dark matter in the pMSSM ruled out?

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arxiv 2207.06238 v2 pith:EZJVROFQ submitted 2022-07-13 hep-ph hep-ex

classification hep-phhep-ex
keywords darklightmatterconstraintsexperimentalfunnelneutralinoparameter
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

We explore the parameter space of the phenomenological Minimal Supersymmetric Standard Model (pMSSM) with a light neutralino thermal dark matter ($m_{\tilde{\chi}_1^0} \leq m_h/2$) that is consistent with current collider and astrophysical constraints. We consider both positive and negative values of the higgsino mass parameter ($\mu$). Our investigation shows that the recent experimental results from the LHC as well as from direct detection searches for dark matter by the LUX-ZEPLIN (LZ) collaboration rule out the $Z$-funnel region for the $\mu>0$ scenario. The same results severely restrict the $h$-funnel region for positive $\mu$, however, the allowed points can be probed easily with few more days of data from the LZ experiment. In the $\mu<0$ scenario, we find that very light higgsinos in both the $Z$ and $h$ funnels might survive the present constraints from the electroweakino searches at the LHC, and dedicated efforts from experimental collaborations are necessary to make conclusive statements about their present status.

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Forward citations

Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Deciphering compressed electroweakino excesses with MadAnalysis 5

    hep-ph 2025-07 conditional novelty 6.0 of 10

    MadAnalysis 5 v1.11 adds validated recasting of two ATLAS compressed-electroweakino searches and shows that a proposed NMSSM scenario fits the soft-lepton and monojet excesses less well than simpler models.

  2. The Light Neutralino Dark Matter in the Generalized Minimal Supergravity (GmSUGRA)

    hep-ph 2025-01 conditional novelty 4.0 of 10

    In GmSUGRA, a light Higgsino-like neutralino dark matter at the Z and Higgs poles survives the LHC and LZ constraints only when the Higgsino mass parameter μ is negative.

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