CMS-PAS-EXO-18-012

CMS-PAS-EXO-18-012
Search for low mass vector resonances decaying into quark-antiquark pairs with 77.0 fb$^{-1}$ of proton-proton collisions at $\sqrt{s}= $ 13 TeV
CMS Collaboration
May 2019

Abstract: A search for low mass vector resonances decaying into quark-antiquark pairs is presented. The analysis is based on data collected in proton-proton collisions in 2017 and combined with data collected in 2016 at $\sqrt{s}= $ 13 TeV with the CMS detector at the CERN LHC, corresponding to a total integrated luminosity of 77.0 fb$^{-1}$. Resonance candidates are identified as large-radius jets with two pronged substructure at high transverse momentum. The jet invariant mass spectrum is probed for a potential peak over a smoothly falling background. No evidence for such a resonance is observed within the mass range of 50-450 GeV. Upper limits at the 95% confidence level are set on the mass-coupling parameter space. The 2017 results extend the search region for the first time to masses between 300 GeV and 450 GeV in the boosted regime.
Links: CDS record (PDF) ; inSPIRE record ; CADI line (restricted) ; These preliminary results are superseded in this paper, PRD 100 (2019) 112007. The superseded preliminary plots can be found here.

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