Search for quark contact interactions and extra spatial dimensions using dijet angular distributions in proton–proton collisions at √s=8TeV
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Issue Date
2015-06Author
CMS Collaboration
Baringer, Philip S.
Bean, Alice
Benelli, Gabriele
Bruner, Christopher
Kenny, R. P., III
Malek, Moh H.
Murray, Michael J.
Noonan, Danny
Sanders, Stephen J.
Sekaric, Jadranka
Stringer, Robert W.
Wang, Quan
Wood, Jeffrey Scott
Publisher
Elsevier
Type
Article
Article Version
Scholarly/refereed, publisher version
Rights
This article is licensed under a Creative Commons Attributions 4.0 International (CC BY 4.0) license
Metadata
Show full item recordAbstract
A search is presented for quark contact interactions and extra spatial dimensions in proton–proton collisions at √s=8TeV 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.
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