Measurements of isolated photon pair production in association with jets in pp collisions at √s = 8 TeV with the ATLAS detector
Abstract
Measurements of integrated and differential production cross section of two isolated photons in events with and without associated hadronic jets based on the 2012 dataset of 20.3 fb−1 integrated luminosity of proton-proton collisions at √s=8 TeV collected by the ATLAS experiment are presented. The measurements consider photons with pseudorapidities of |ηγ|<1.37 or 1.56<|ηγ|<2.37 and transverse energy of ETγ>22 GeV. Jets are required to have pTj>25 GeV for |ηj|<2.4 and pTj>50 GeV for 2.4<|ηj|<4.4. Events are classified into categories based on the number of jets and integrated fiducial cross sections of diphoton production in association with inclusive and exclusive number of jets are presented. Fiducial cross sections, differential in sixteen diphoton, jet, dijet and photon-jet observables, are presented and compared with leading-order Sherpa 1.4.1 predictions in all jet categories, fixed-order next-to-leading-order GoSam and BlackHat calculations in selected categories, and NLO-matched predictions from Sherpa 2.2.14 in all categories. Overall, the NLO predictions provide a reasonable description of the data, with significant discrepancies observed for increasing jet multiplicity, particularly for angular variables, attributable to the absence of higher-order terms in the calculations. The Sherpa 2.2.14 NLO-matched predictions provide the best overall description of the data across all jet categories and observables.
Related
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BibTeX
@misc{collaboration2026measurements,
title = {{Measurements of isolated photon pair production in association with jets in pp collisions at $\sqrts$ = 8 TeV with the ATLAS detector}},
author = {ATLAS Collaboration},
howpublished = {arXiv},
year = {2026},
month = nov,
doi = {10.48550/arxiv.2611.06142},
eprint = {2611.06142},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2611.06142},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - Measurements of isolated photon pair production in association with jets in pp collisions at √s = 8 TeV with the ATLAS detector
AU - ATLAS Collaboration
PY - 2026
DA - 2026/11/04
PB - arXiv
DO - 10.48550/arxiv.2611.06142
UR - https://arxiv.org/abs/2611.06142
AB - Measurements of integrated and differential production cross section of two isolated photons in events with and without associated hadronic jets based on the 2012 dataset of 20.3 fb^−1 integrated luminosity of proton-proton collisions at √s=8 TeV collected by the ATLAS experiment are presented. The measurements consider photons with pseudorapidities of |η^γ|<1.37 or 1.56<|η^γ|<2.37 and transverse energy of E_T^γ>22 GeV. Jets are required to have p_T^j>25 GeV for |η^j|<2.4 and p_T^j>50 GeV for 2.4<|η^j|<4.4. Events are classified into categories based on the number of jets and integrated fiducial cross sections of diphoton production in association with inclusive and exclusive number of jets are presented. Fiducial cross sections, differential in sixteen diphoton, jet, dijet and photon-jet observables, are presented and compared with leading-order Sherpa 1.4.1 predictions in all jet categories, fixed-order next-to-leading-order GoSam and BlackHat calculations in selected categories, and NLO-matched predictions from Sherpa 2.2.14 in all categories. Overall, the NLO predictions provide a reasonable description of the data, with significant discrepancies observed for increasing jet multiplicity, particularly for angular variables, attributable to the absence of higher-order terms in the calculations. The Sherpa 2.2.14 NLO-matched predictions provide the best overall description of the data across all jet categories and observables.
ER -