Search for low mass vector resonances decaying into quark-antiquark pairs in proton-proton collisions at √s=13 TeV

The CMS Collaboration

Research output: Contribution to journalArticle

29 Citations (Scopus)

Abstract

A search for narrow vector resonances decaying into quark-antiquark pairs is presented. The analysis is based on data collected in proton-proton collisions at s=13 TeV with the CMS detector at the LHC, corresponding to an integrated luminosity of 35.9 fb−1. The hypothetical resonance is produced with sufficiently high transverse momentum that its decay products are merged into a single jet with two-prong substructure. A signal would be identified as a peak over a smoothly falling background in the distribution of the invariant mass of the jet, using novel jet substructure techniques. No evidence for such a resonance is observed within the mass range of 50-300 GeV. Upper limits at 95% confidence level are set on the production cross section, and presented in a mass-coupling parameter space. The limits further constrain simplified models of dark matter production involving a mediator interacting between quarks and dark matter particles through a vector or axial-vector current. In the framework of these models, the results are the most sensitive to date, extending for the first time the search region to masses below 100 GeV.[Figure not available: see fulltext.].

Original languageEnglish
Article number97
JournalJournal of High Energy Physics
Volume2018
Issue number1
DOIs
Publication statusPublished - Jan 1 2018

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quarks
collisions
protons
substructures
dark matter
vector currents
falling
transverse momentum
confidence
luminosity
detectors
cross sections
decay
products

Keywords

  • Dark matter
  • Hadron-Hadron scattering (experiments)
  • Jet substructure
  • Jets

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Search for low mass vector resonances decaying into quark-antiquark pairs in proton-proton collisions at √s=13 TeV. / The CMS Collaboration.

In: Journal of High Energy Physics, Vol. 2018, No. 1, 97, 01.01.2018.

Research output: Contribution to journalArticle

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