Search for excited quarks in the γ+jet final state in proton–proton collisions at √s = 8 TeV

CMS Collaboration

doi:10.1016/j.physletb.2014.09.048

Search for excited quarks in the γ+jet final state in proton–proton collisions at √s = 8 TeV

CMS Collaboration

Research output: Contribution to journal › Article › Research › peer-review

24 Citations (Scopus)

Abstract

A search for excited quarks decaying into the γ+jet final state is presented. The analysis is based on data corresponding to an integrated luminosity of 19.7fb⁻¹ collected by the CMS experiment in proton–proton collisions at √s = 8 TeV at the LHC. Events with photons and jets with high transverse momenta are selected and the γ+jet invariant mass distribution is studied to search for a resonance peak. The 95% confidence level upper limits on the product of cross section and branching fraction are evaluated as a function of the excited quark mass. Limits on excited quarks are presented as a function of their mass and coupling strength; masses below 3.5 TeV are excluded at 95% confidence level for unit couplings to their standard model partners.

Original language	English
Pages (from-to)	274-293
Number of pages	20
Journal	Physics Letters B
Volume	738
DOIs	https://doi.org/10.1016/j.physletb.2014.09.048
Publication status	Published - 2014
Externally published	Yes

Keywords

CMS
Physics
Photon
Jet

Access to Document

10.1016/j.physletb.2014.09.048

226545614-oaFinal published version, 586 KB

Cite this

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title = "Search for excited quarks in the γ+jet final state in proton–proton collisions at √s = 8 TeV",

abstract = "A search for excited quarks decaying into the γ+jet final state is presented. The analysis is based on data corresponding to an integrated luminosity of 19.7fb−1 collected by the CMS experiment in proton–proton collisions at √s = 8 TeV at the LHC. Events with photons and jets with high transverse momenta are selected and the γ+jet invariant mass distribution is studied to search for a resonance peak. The 95\% confidence level upper limits on the product of cross section and branching fraction are evaluated as a function of the excited quark mass. Limits on excited quarks are presented as a function of their mass and coupling strength; masses below 3.5 TeV are excluded at 95\% confidence level for unit couplings to their standard model partners.",

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author = "J Nash and \{CMS Collaboration\}",

year = "2014",

doi = "10.1016/j.physletb.2014.09.048",

language = "English",

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journal = "Physics Letters B",

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AU - Nash, J

AU - CMS Collaboration

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N2 - A search for excited quarks decaying into the γ+jet final state is presented. The analysis is based on data corresponding to an integrated luminosity of 19.7fb−1 collected by the CMS experiment in proton–proton collisions at √s = 8 TeV at the LHC. Events with photons and jets with high transverse momenta are selected and the γ+jet invariant mass distribution is studied to search for a resonance peak. The 95% confidence level upper limits on the product of cross section and branching fraction are evaluated as a function of the excited quark mass. Limits on excited quarks are presented as a function of their mass and coupling strength; masses below 3.5 TeV are excluded at 95% confidence level for unit couplings to their standard model partners.

AB - A search for excited quarks decaying into the γ+jet final state is presented. The analysis is based on data corresponding to an integrated luminosity of 19.7fb−1 collected by the CMS experiment in proton–proton collisions at √s = 8 TeV at the LHC. Events with photons and jets with high transverse momenta are selected and the γ+jet invariant mass distribution is studied to search for a resonance peak. The 95% confidence level upper limits on the product of cross section and branching fraction are evaluated as a function of the excited quark mass. Limits on excited quarks are presented as a function of their mass and coupling strength; masses below 3.5 TeV are excluded at 95% confidence level for unit couplings to their standard model partners.

KW - CMS

KW - Physics

KW - Photon

KW - Jet

U2 - 10.1016/j.physletb.2014.09.048

DO - 10.1016/j.physletb.2014.09.048

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JO - Physics Letters B

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