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

Collaboration 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

Collaboration CMS Collaboration

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

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⁻¹collected 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, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	738
DOIs	https://doi.org/10.1016/j.physletb.2014.09.048
Publication status	Published - 10 Nov 2014
Externally published	Yes

Keywords

CMS
Jet
Photon
Physics

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10.1016/j.physletb.2014.09.048

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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−1collected 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 = "\{CMS Collaboration\}, Collaboration",

note = "Publisher Copyright: {\textcopyright} 2014",

year = "2014",

month = nov,

day = "10",

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

language = "English",

volume = "738",

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journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

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publisher = "Elsevier BV",

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T1 - Search for excited quarks in the γ+jet final state in proton-proton collisions at s=8 TeV

AU - CMS Collaboration, Collaboration

PY - 2014/11/10

Y1 - 2014/11/10

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−1collected 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−1collected 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 - Jet

KW - Photon

KW - Physics

UR - https://www.scopus.com/pages/publications/85041771241

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DO - 10.1016/j.physletb.2014.09.048

M3 - Article

SN - 0370-2693

VL - 738

SP - 274

EP - 293

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

ER -

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

Abstract

Keywords

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