Measurement of the inclusive isolated-photon cross section in pp collisions at √s=13 TeV using 36 fb-1 of ATLAS data

ATLAS Collaboration; Paul Newman

doi:10.1007/JHEP10(2019)203

Measurement of the inclusive isolated-photon cross section in pp collisions at √s=13 TeV using 36 fb^-1 of ATLAS data

ATLAS Collaboration, Paul Newman

Physics and Astronomy

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Abstract

The differential cross section for isolated-photon production in pp collisions is measured at a centre-of-mass energy of 13 TeV with the ATLAS detector at the LHC using an integrated luminosity of 36.1 fb⁻¹. The differential cross section is presented as a function of the photon transverse energy in different regions of photon pseudorapidity. The differential cross section as a function of the absolute value of the photon pseudorapidity is also presented in different regions of photon transverse energy. Next-to-leading-order QCD calculations from Jetphox and Sherpa as well as next-to-next-to-leading-order QCD calculations from Nnlojet are compared with the measurement, using several parameterisations of the proton parton distribution functions. The predictions provide a good description of the data within the experimental and theoretical uncertainties.

Original language	English
Article number	203
Number of pages	51
Journal	JHEP
Volume	2019
Issue number	203
DOIs	https://doi.org/10.1007/JHEP10(2019)203
Publication status	Published - 18 Oct 2019

Bibliographical note

49 pages in total, author list starting page 33, 12 figures, 2 tables, submitted to JHEP. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/STDM-2017-29/

Keywords

hep-ex
Hadron-Hadron scattering (experiments)
Photon production
QCD

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Cite this

@article{2827a830ca1d4b6a861931db655b188f,

title = "Measurement of the inclusive isolated-photon cross section in pp collisions at √s=13 TeV using 36 fb-1 of ATLAS data",

abstract = "The differential cross section for isolated-photon production in pp collisions is measured at a centre-of-mass energy of 13 TeV with the ATLAS detector at the LHC using an integrated luminosity of 36.1 fb−1. The differential cross section is presented as a function of the photon transverse energy in different regions of photon pseudorapidity. The differential cross section as a function of the absolute value of the photon pseudorapidity is also presented in different regions of photon transverse energy. Next-to-leading-order QCD calculations from Jetphox and Sherpa as well as next-to-next-to-leading-order QCD calculations from Nnlojet are compared with the measurement, using several parameterisations of the proton parton distribution functions. The predictions provide a good description of the data within the experimental and theoretical uncertainties.",

keywords = "hep-ex, Hadron-Hadron scattering (experiments), Photon production, QCD",

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

note = "49 pages in total, author list starting page 33, 12 figures, 2 tables, submitted to JHEP. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/STDM-2017-29/",

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TY - JOUR

T1 - Measurement of the inclusive isolated-photon cross section in pp collisions at √s=13 TeV using 36 fb-1 of ATLAS data

AU - ATLAS Collaboration

AU - Newman, Paul

N1 - 49 pages in total, author list starting page 33, 12 figures, 2 tables, submitted to JHEP. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/STDM-2017-29/

PY - 2019/10/18

Y1 - 2019/10/18

N2 - The differential cross section for isolated-photon production in pp collisions is measured at a centre-of-mass energy of 13 TeV with the ATLAS detector at the LHC using an integrated luminosity of 36.1 fb−1. The differential cross section is presented as a function of the photon transverse energy in different regions of photon pseudorapidity. The differential cross section as a function of the absolute value of the photon pseudorapidity is also presented in different regions of photon transverse energy. Next-to-leading-order QCD calculations from Jetphox and Sherpa as well as next-to-next-to-leading-order QCD calculations from Nnlojet are compared with the measurement, using several parameterisations of the proton parton distribution functions. The predictions provide a good description of the data within the experimental and theoretical uncertainties.

AB - The differential cross section for isolated-photon production in pp collisions is measured at a centre-of-mass energy of 13 TeV with the ATLAS detector at the LHC using an integrated luminosity of 36.1 fb−1. The differential cross section is presented as a function of the photon transverse energy in different regions of photon pseudorapidity. The differential cross section as a function of the absolute value of the photon pseudorapidity is also presented in different regions of photon transverse energy. Next-to-leading-order QCD calculations from Jetphox and Sherpa as well as next-to-next-to-leading-order QCD calculations from Nnlojet are compared with the measurement, using several parameterisations of the proton parton distribution functions. The predictions provide a good description of the data within the experimental and theoretical uncertainties.

KW - hep-ex

KW - Hadron-Hadron scattering (experiments)

KW - Photon production

KW - QCD

U2 - 10.1007/JHEP10(2019)203

DO - 10.1007/JHEP10(2019)203

M3 - Article

SN - 1126-6708

VL - 2019

JO - JHEP

JF - JHEP

IS - 203

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ER -