Search for quark contact interactions and extra spatial dimensions using dijet angular distributions in proton-proton collisions at √s = 8 TeV

CMS Collaboration

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

A search is presented for quark contact interactions and extra spatial dimensions in proton-proton collisions at √s=8 TeV using dijet angular distributions. The search is based on a data set corresponding to an integrated luminosity of 19.7 fb-1 collected by the CMS detector at the CERN LHC. Dijet angular distributions are found to be in agreement with the perturbative QCD predictions that include electroweak corrections. Limits on the contact interaction scale from a variety of models at next-to-leading order in QCD corrections are obtained. A benchmark model in which only left-handed quarks participate is excluded up to a scale of 9.0 (11.7) TeV for destructive (constructive) interference at 95% confidence level. Lower limits between 5.9 and 8.4 TeV on the scale of virtual graviton exchange are extracted for the Arkani-Hamed-Dimopoulos-Dvali model of extra spatial dimensions.

Original languageEnglish
Pages (from-to)79-99
Number of pages21
JournalPhysics Letters B
Volume746
DOIs
Publication statusPublished - Apr 1 2015

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electric contacts
angular distribution
quarks
collisions
protons
quantum chromodynamics
gravitons
interactions
confidence
luminosity
interference
detectors
predictions

Keywords

  • CMS
  • Contact interactions
  • Electroweak corrections
  • Extra dimensions
  • Physics
  • QCD

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Search for quark contact interactions and extra spatial dimensions using dijet angular distributions in proton-proton collisions at √s = 8 TeV. / CMS Collaboration.

In: Physics Letters B, Vol. 746, 01.04.2015, p. 79-99.

Research output: Contribution to journalArticle

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