Compressed electroweakino spectra at the LHC

By P. Schwaller, Jose Manuel Zurita. 2013

150 citations recorded by the source corpus.

A bstractIn this work, we examine the sensitivity of monojet searches at the LHC to directly produced charginos and neutralinos (electroweakinos) in the limit of small mass splitting, where the traditional multilepton plus missing energy searches loose their sensitivity. We first recast the existing 8 TeV monojet search at CMS in terms of a SUSY simplified model with only light gauginos (winos and binos) or only light Higgsinos. The current searches are not sensitive to MSSM-like production cross sections, but would be sensitive to models with 2-20 times enhanced production cross section, for particle masses between 100 GeV and 250 GeV. Then we explore the sensitivity in the 14 TeV run of the LHC. Here we emphasise that in addition to the pure monojet search, soft leptons present in the samples can be used to increase the sensitivity. Exclusion of electroweakino masses up to 200 GeV is possible with 300 fb−1 at the LHC, if the systematic error can be reduced to the 1% level. Discovery is possible with 3000 fb−1 in some regions of parameter space.

Subfields: Artificial Intelligence, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/445f051e44a1fdfd2c31b3cd809022e3c4818472

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In Artificial Intelligence

In Nuclear and High Energy Physics

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Beyond the Standard Model Physics at the HL-LHC and HE-LHC (2018, background): “If pISRT is the transverse momentum of everything that recoils against the stop pair, it can be shown that RISR ≡ EmissT pISRT ∼ m ( χ̃01 ) m ( t̃1 ) .”