Please use this identifier to cite or link to this item:
https://hdl.handle.net/10316/105002
DC Field | Value | Language |
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dc.contributor.author | Fiolhais, M. C. N. | - |
dc.contributor.author | Gonçalo, R. | - |
dc.contributor.author | Veloso, F. | - |
dc.contributor.author | Wolters, H. | - |
dc.contributor.author | ATLAS Collaboration | - |
dc.date.accessioned | 2023-01-27T10:21:54Z | - |
dc.date.available | 2023-01-27T10:21:54Z | - |
dc.date.issued | 2021-11 | - |
dc.identifier.uri | https://hdl.handle.net/10316/105002 | - |
dc.description.abstract | A measurement of prompt photon-pair production in proton-proton collisions at p s = 13 TeV is presented. The data were recorded by the ATLAS detector at the LHC with an integrated luminosity of 139 fb−1. Events with two photons in the wellinstrumented region of the detector are selected. The photons are required to be isolated and have a transverse momentum of pT, 1(2) > 40 (30) GeV for the leading (sub-leading) photon. The differential cross sections as functions of several observables for the diphoton system are measured and compared with theoretical predictions from state-of-the-art Monte Carlo and fixed-order calculations. The QCD predictions from next-to-next-to-leadingorder calculations and multi-leg merged calculations are able to describe the measured integrated and differential cross sections within uncertainties, whereas lower-order calculations show significant deviations, demonstrating that higher-order perturbative QCD corrections are crucial for this process. The resummed predictions with parton showers additionally provide an excellent description of the low transverse-momentum regime of the diphoton system. | pt |
dc.language.iso | eng | pt |
dc.publisher | Springer Nature | pt |
dc.rights | openAccess | pt |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | pt |
dc.subject | Hadron-Hadron scattering (experiments) | pt |
dc.subject | photon production | pt |
dc.subject | proton-proton scattering | pt |
dc.subject | QCD | pt |
dc.title | Measurement of the production cross section of pairs of isolated photons in pp collisions at 13 TeV with the ATLAS detector | pt |
dc.type | article | - |
degois.publication.firstPage | 169 | pt |
degois.publication.issue | 11 | pt |
degois.publication.title | Journal of High Energy Physics | pt |
dc.peerreviewed | yes | pt |
dc.identifier.doi | 10.1007/JHEP11(2021)169 | pt |
degois.publication.volume | 2021 | pt |
dc.date.embargo | 2021-11-01 | * |
uc.date.periodoEmbargo | 0 | pt |
item.fulltext | Com Texto completo | - |
item.grantfulltext | open | - |
item.languageiso639-1 | en | - |
item.cerifentitytype | Publications | - |
item.openairetype | article | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
crisitem.author.researchunit | LIP – Laboratory of Instrumentation and Experimental Particle Physics | - |
crisitem.author.researchunit | LIP – Laboratory of Instrumentation and Experimental Particle Physics | - |
crisitem.author.researchunit | LIP – Laboratory of Instrumentation and Experimental Particle Physics | - |
crisitem.author.orcid | 0000-0002-3826-3442 | - |
crisitem.author.orcid | 0000-0002-9588-1773 | - |
Appears in Collections: | FCTUC Física - Artigos em Revistas Internacionais |
Files in This Item:
File | Description | Size | Format | |
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JHEP11(2021)169.pdf | 4.24 MB | Adobe PDF | View/Open |
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