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Saving SUSY: Interpreting the 3.3σ ATLAS Stop Excess

28 Oct 2016, 16:24 UTC
Saving SUSY: Interpreting the 3.3σ ATLAS Stop Excess
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Article: Surviving scenario of stop decays for ATLAS l+jets+E_T^miss search
Authors: Chengcheng Han, Mihoko M. Nojiri, Michihisa Takeuchi, and Tsutomu T. Yanagida
Reference: arXiv:1609.09303v1 [hep-ph]
If you’ve been following the ongoing SUSY searches, you know that much of the phase space accessible at colliders like the LHC has been ruled out. Nevertheless, many phenomenologists are working diligently to develop alternative frameworks that maintain the compatibility of the Minimal Supersymmetric Standard Model (MSSM, one of the most compelling SUSY models) with recent experimental results. If evidence of SUSY is found at the LHC, it could help us start answering questions about naturalness, dark matter, gauge coupling unification, and other BSM questions, so it’s no wonder so many researchers are invested in keeping the SUSY search alive.
This particular paper discusses recent 13 TeV ATLAS results in the l+jets+ETmiss channel where an excess of up to 3.3σ above Standard Model expectations were seen in the initial 13TeV Run 2 dataset. Although CMS hasn’t reported any significant excess in this channel, both experiments see a moderate excess in the 0 lepton channel, so there’s some strong motivation for phenomenologists to explain these preliminary results as the presence of a new particle, namely a ...

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