Measurement of the cross section for isolated-photon plus jet production in pp collisions at s√=13 TeV using the ATLAS detector

ATLAS Collaboration

doi:10.1016/j.physletb.2018.03.035

Measurement of the cross section for isolated-photon plus jet production in pp collisions at s√=13 TeV using the ATLAS detector

ATLAS Collaboration

Physics and Astronomy

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Abstract

The dynamics of isolated-photon production in association with a jet in proton–proton collisions at a centre-of-mass energy of 13 TeV are studied with the ATLAS detector at the LHC using a dataset with an integrated luminosity of 3.2 fb−1. Photons are required to have transverse energies above 125 GeV. Jets are identified using the anti-kt algorithm with radius parameter R=0.4 and required to have transverse momenta above 100 GeV. Measurements of isolated-photon plus jet cross sections are presented as functions of the leading-photon transverse energy, the leading-jet transverse momentum, the azimuthal angular separation between the photon and the jet, the photon–jet invariant mass and the scattering angle in the photon–jet centre-of-mass system. Tree-level plus parton-shower predictions from SHERPA and PYTHIA as well as next-to-leading-order QCD predictions from JETPHOX and SHERPA are compared to the measurements.

Original language	English
Pages (from-to)	578-602
Number of pages	25
Journal	Physical Review Letters
Volume	780
Early online date	15 Mar 2018
DOIs	https://doi.org/10.1016/j.physletb.2018.03.035
Publication status	Published - 10 May 2018

Bibliographical note

40 pages in total, author list starting page 24, 5 figures, 1 table, published in Physics Letters B, All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/STDM-2017-01/

Keywords

hep-ex

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ATLAS_Measurement_of_the_cross_section_for_isolated-photon_Physics_Letters_B_2018
Checked for eligibility 04/12/2018 https://doi.org/10.1016/j.physletb.2018.03.035
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Cite this

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title = "Measurement of the cross section for isolated-photon plus jet production in pp collisions at s√=13 TeV using the ATLAS detector",

abstract = " The dynamics of isolated-photon production in association with a jet in proton–proton collisions at a centre-of-mass energy of 13 TeV are studied with the ATLAS detector at the LHC using a dataset with an integrated luminosity of 3.2 fb−1. Photons are required to have transverse energies above 125 GeV. Jets are identified using the anti-kt algorithm with radius parameter R=0.4 and required to have transverse momenta above 100 GeV. Measurements of isolated-photon plus jet cross sections are presented as functions of the leading-photon transverse energy, the leading-jet transverse momentum, the azimuthal angular separation between the photon and the jet, the photon–jet invariant mass and the scattering angle in the photon–jet centre-of-mass system. Tree-level plus parton-shower predictions from SHERPA and PYTHIA as well as next-to-leading-order QCD predictions from JETPHOX and SHERPA are compared to the measurements.",

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author = "{ATLAS Collaboration} and Paul Newman",

note = "40 pages in total, author list starting page 24, 5 figures, 1 table, published in Physics Letters B, All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/STDM-2017-01/",

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doi = "10.1016/j.physletb.2018.03.035",

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AU - ATLAS Collaboration

A2 - Newman, Paul

N1 - 40 pages in total, author list starting page 24, 5 figures, 1 table, published in Physics Letters B, All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/STDM-2017-01/

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N2 - The dynamics of isolated-photon production in association with a jet in proton–proton collisions at a centre-of-mass energy of 13 TeV are studied with the ATLAS detector at the LHC using a dataset with an integrated luminosity of 3.2 fb−1. Photons are required to have transverse energies above 125 GeV. Jets are identified using the anti-kt algorithm with radius parameter R=0.4 and required to have transverse momenta above 100 GeV. Measurements of isolated-photon plus jet cross sections are presented as functions of the leading-photon transverse energy, the leading-jet transverse momentum, the azimuthal angular separation between the photon and the jet, the photon–jet invariant mass and the scattering angle in the photon–jet centre-of-mass system. Tree-level plus parton-shower predictions from SHERPA and PYTHIA as well as next-to-leading-order QCD predictions from JETPHOX and SHERPA are compared to the measurements.

AB - The dynamics of isolated-photon production in association with a jet in proton–proton collisions at a centre-of-mass energy of 13 TeV are studied with the ATLAS detector at the LHC using a dataset with an integrated luminosity of 3.2 fb−1. Photons are required to have transverse energies above 125 GeV. Jets are identified using the anti-kt algorithm with radius parameter R=0.4 and required to have transverse momenta above 100 GeV. Measurements of isolated-photon plus jet cross sections are presented as functions of the leading-photon transverse energy, the leading-jet transverse momentum, the azimuthal angular separation between the photon and the jet, the photon–jet invariant mass and the scattering angle in the photon–jet centre-of-mass system. Tree-level plus parton-shower predictions from SHERPA and PYTHIA as well as next-to-leading-order QCD predictions from JETPHOX and SHERPA are compared to the measurements.

KW - hep-ex

U2 - 10.1016/j.physletb.2018.03.035

DO - 10.1016/j.physletb.2018.03.035

M3 - Article

SN - 0031-9007

VL - 780

SP - 578

EP - 602

JO - Physical Review Letters

JF - Physical Review Letters

ER -

Measurement of the cross section for isolated-photon plus jet production in pp collisions at s√=13 TeV using the ATLAS detector

Abstract

Bibliographical note

Keywords

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