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

Search for quark contact interactions and extra spatial dimensions using dijet angular distributions in proton-proton collisions at √s = 8TeV
Search for quark contact interactions and extra spatial dimensions using dijet angular distributions in proton-proton collisions at √s = 8TeV
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.
0370-2693
79-99
Khachatryan, Vardan
375bcfe5-df1a-41ad-9a90-553e557ef6d6
Belyaev, Alexander
6bdb9638-5ff9-4b65-a8f2-34bae3ac34b3
The CMS Collaboration
Khachatryan, Vardan
375bcfe5-df1a-41ad-9a90-553e557ef6d6
Belyaev, Alexander
6bdb9638-5ff9-4b65-a8f2-34bae3ac34b3

The CMS Collaboration (2015) Search for quark contact interactions and extra spatial dimensions using dijet angular distributions in proton-proton collisions at √s = 8TeV. Physics Letters B, 746, 79-99. (doi:10.1016/j.physletb.2015.04.042).

Record type: Article

Abstract

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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e-pub ahead of print date: 24 April 2015
Published date: 30 June 2015
Organisations: Physics & Astronomy

Identifiers

Local EPrints ID: 410513
URI: http://eprints.soton.ac.uk/id/eprint/410513
ISSN: 0370-2693
PURE UUID: 036cd48f-aa6d-4029-9dc4-3c21703847d0
ORCID for Alexander Belyaev: ORCID iD orcid.org/0000-0002-1733-4408

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Date deposited: 09 Jun 2017 09:02
Last modified: 19 Nov 2019 01:44

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Contributors

Author: Vardan Khachatryan
Corporate Author: The CMS Collaboration

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