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The case for 100 GeV bino dark matter: A dedicated LHC tri-lepton search · Around

2016

The case for 100 GeV bino dark matter: A dedicated LHC tri-lepton search

van Beekveld, Melissa, Beenakker, Wim, Caron, Sascha et al.

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Global fit studies performed in the pMSSM and the photon excess signal originating from the Galactic Center seem to suggest compressed electroweak supersymmetric spectra with a $\sim$100 GeV bino-like dark matter particle.

We find that these scenarios are not probed by traditional electroweak supersymmetry searches at the LHC.
We propose to extend the ATLAS and CMS electroweak supersymmetry searches with an improved strategy for bino-like dark matter, focusing on chargino plus next-to-lightest neutralino production, with a subsequent decay into a tri-lepton final state.
We explore the sensitivity for pMSSM scenarios with $\Delta m = m_{\rm NLSP} - m_{\rm LSP} \sim (5 - 50)$ GeV in the $\sqrt{s} = 14$ TeV run of the LHC.

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