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Article: Measurement of the production cross section of pairs of isolated photons in pp collisions at 13 TeV with the ATLAS detector
Title | Measurement of the production cross section of pairs of isolated photons in pp collisions at 13 TeV with the ATLAS detector |
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Authors | |
Keywords | Hadron-Hadron scattering (experiments) photon production proton-proton scattering QCD |
Issue Date | 2021 |
Publisher | Springer Verlag: SCOAP3. The Journal's web site is located at http://www.springer.com/physics/particle+and+nuclear+physics/journal/13130 |
Citation | Journal of High Energy Physics, 2021, v. 2021 n. 11, article no. 169 How to Cite? |
Abstract | A measurement of prompt photon-pair production in proton-proton collisions at √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 well-instrumented region of the detector are selected. The photons are required to be isolated and have a transverse momentum of pT,γ1(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-leading-order 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. |
Persistent Identifier | http://hdl.handle.net/10722/309885 |
ISSN | 2023 Impact Factor: 5.0 2023 SCImago Journal Rankings: 0.832 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | The ATLAS collaboration | - |
dc.contributor.author | Paredes Hernandez, D | - |
dc.contributor.author | Peng, C | - |
dc.contributor.author | Tam, KC | - |
dc.contributor.author | Tu, Y | - |
dc.contributor.author | Pizzimento, L | - |
dc.date.accessioned | 2022-01-10T09:15:16Z | - |
dc.date.available | 2022-01-10T09:15:16Z | - |
dc.date.issued | 2021 | - |
dc.identifier.citation | Journal of High Energy Physics, 2021, v. 2021 n. 11, article no. 169 | - |
dc.identifier.issn | 1029-8479 | - |
dc.identifier.uri | http://hdl.handle.net/10722/309885 | - |
dc.description.abstract | A measurement of prompt photon-pair production in proton-proton collisions at √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 well-instrumented region of the detector are selected. The photons are required to be isolated and have a transverse momentum of pT,γ1(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-leading-order 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. | - |
dc.language | eng | - |
dc.publisher | Springer Verlag: SCOAP3. The Journal's web site is located at http://www.springer.com/physics/particle+and+nuclear+physics/journal/13130 | - |
dc.relation.ispartof | Journal of High Energy Physics | - |
dc.rights | This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License. | - |
dc.subject | Hadron-Hadron scattering (experiments) | - |
dc.subject | photon production | - |
dc.subject | proton-proton scattering | - |
dc.subject | QCD | - |
dc.title | Measurement of the production cross section of pairs of isolated photons in pp collisions at 13 TeV with the ATLAS detector | - |
dc.type | Article | - |
dc.identifier.email | Paredes Hernandez, D: dparedes@hku.hk | - |
dc.identifier.email | Peng, C: samp0808@HKUCC-COM.hku.hk | - |
dc.identifier.email | Tu, Y: yanjuntu@hku.hk | - |
dc.identifier.authority | Tu, Y=rp01971 | - |
dc.description.nature | published_or_final_version | - |
dc.identifier.doi | 10.1007/JHEP11(2021)169 | - |
dc.identifier.scopus | eid_2-s2.0-85120959330 | - |
dc.identifier.hkuros | 331359 | - |
dc.identifier.volume | 2021 | - |
dc.identifier.issue | 11 | - |
dc.identifier.spage | article no. 169 | - |
dc.identifier.epage | article no. 169 | - |
dc.identifier.isi | WOS:000728326100001 | - |
dc.publisher.place | Germany | - |