CMS-PAS-SUS-23-003

CMS-PAS-SUS-23-003
General search for supersymmetric particles in scenarios with compressed mass spectra using proton-proton collisions at $ \sqrt{s}= $ 13 TeV
CMS Collaboration
19 July 2024

Abstract: A general search is presented for supersymmetric particles (sparticles) in scenarios featuring compressed mass spectra using proton-proton collisions at a center-of-mass energy of 13 TeV with the CMS detector at the LHC. The analyzed data sample corresponds to an integrated luminosity of 138 fb$ ^{-1} $. A wide range of potential sparticle signatures are targeted including pair production of electroweakinos, sleptons, and top squarks. The search is focused on events with a high transverse momentum system from initial-state-radiation jets recoiling against a potential sparticle system with significant missing transverse momentum. Events are categorized based on their lepton multiplicity, jet multiplicity, b tags, and kinematic variables sensitive to the sparticle masses and mass splittings. The sensitivity extends to higher parent sparticle masses than previously probed at the LHC for production of pairs of electroweakinos, sleptons, and top squarks for compressed mass spectra. The observed results demonstrate agreement with the predictions of the background-only model. Lower mass limits are set at 95% confidence level on production of pairs of electroweakinos, sleptons, and top squarks that extend to 300, 275, and 760 GeV, respectively, for the most favorable compressed mass regime cases.
Links: CDS record (PDF) ; CADI line (restricted) ; These preliminary results are superseded in this paper, Submitted to PRD. The superseded preliminary plots can be found here.

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