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Article: Measurement of substructure-dependent jet suppression in Pb plus Pb collisions at 5.02 TeV with the ATLAS detector

TitleMeasurement of substructure-dependent jet suppression in Pb plus Pb collisions at 5.02 TeV with the ATLAS detector
Authors
Issue Date12-May-2023
PublisherAmerican Physical Society
Citation
Physical Review C, 2023, v. 107, n. 5 How to Cite?
AbstractThe ATLAS detector at the Large Hadron Collider has been used to measure jet substructure modification and suppression in Pb+Pb collisions at a nucleon-nucleon center-of-mass energy root sNN = 5.02 TeV in comparison with proton-proton (pp) collisions at root s = 5.02 TeV. The Pb+Pb data, collected in 2018, have an integrated luminosity of 1.72 nb(-1), while the pp data, collected in 2017, have an integrated luminosity of 260 pb(-1). Jets used in this analysis are clustered using the anti-k(t) algorithm with a radius parameter R = 0.4. The jet constituents, defined by both tracking and calorimeter information, are used to determine the angular scale rg of the first hard splitting inside the jet by reclustering them using the Cambridge-Aachen algorithm and employing the soft-drop grooming technique. The nuclear modification factor, RAA, used to characterize jet suppression in Pb+Pb collisions, is presented differentially in rg, jet transverse momentum, and in intervals of collision centrality. The RAA value is observed to depend significantly on jet r(g). Jets produced with the largest measured r(g) are found to be twice as suppressed as those with the smallest rg in central Pb+Pb collisions. The RAA values do not exhibit a strong variation with jet p(T) in any of the rg intervals. The r(g) and p(T) dependence of jet RAA is qualitatively consistent with a picture of jet quenching arising from coherence and provides the most direct evidence in support of this approach.
Persistent Identifierhttp://hdl.handle.net/10722/338521
ISSN
2023 Impact Factor: 3.2
2023 SCImago Journal Rankings: 1.223
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorAad, G-
dc.contributor.authorAbbott, B-
dc.contributor.authorAbbott, DC-
dc.contributor.authorAbeling, K-
dc.contributor.authorAbidi, SH-
dc.contributor.authorAboulhorma, A-
dc.contributor.authorAbramowicz, H-
dc.contributor.authorAbreu, H-
dc.contributor.authorAbulaiti, Y-
dc.contributor.authorHoffman, ACA-
dc.contributor.authorAcharya, BS-
dc.contributor.authorAchkar, B-
dc.contributor.authorAdam, L-
dc.contributor.authorBourdarios, CA-
dc.contributor.authorAdamczyk, L-
dc.contributor.authorAdamek, L-
dc.contributor.authorAddepalli, SV-
dc.contributor.authorAdelman, J-
dc.contributor.authorAdiguzel, A-
dc.contributor.authorAdorni, S-
dc.contributor.authorAdye, T-
dc.contributor.authorAffolder, AA-
dc.contributor.authorAfik, Y-
dc.contributor.authorAgaras, MN-
dc.contributor.authorAgarwala, J-
dc.contributor.authorAggarwal, A-
dc.contributor.authorAgheorghiesei, C-
dc.contributor.authorAguilar-Saavedra, JA-
dc.contributor.authorAhmad, A-
dc.contributor.authorAhmadov, F-
dc.contributor.authorAhmed, WS-
dc.contributor.authorAhuja, S-
dc.contributor.authorAi, X-
dc.contributor.authorAielli, G-
dc.contributor.authorAizenberg, I-
dc.contributor.authorAkbiyik, M-
dc.contributor.authorAkesson, TPA-
dc.contributor.authorAkimov, AV-
dc.contributor.authorAl, Khoury K-
dc.contributor.authorAlberghi, GL-
dc.contributor.authorAlbert, J-
dc.contributor.authorAlbicocco, P-
dc.contributor.authorVerzini, MA-
dc.contributor.authorAlderweireldt, S-
dc.contributor.authorAleksa, M-
dc.contributor.authorAleksandrov, IN-
dc.contributor.authorAlexa, C-
dc.contributor.authorAlexopoulos, T-
dc.contributor.authorAlfonsi, A-
dc.contributor.authorAlfonsi, F-
dc.contributor.authorAlhroob, M-
dc.contributor.authorAli, B-
dc.contributor.authorAli, S-
dc.contributor.authorAliev, M-
dc.contributor.authorAlimonti, G-
dc.contributor.authorAllaire, C-
dc.contributor.authorAllbrooke, BMM-
dc.contributor.authorAllport, PP-
dc.contributor.authorAloisio, A-
dc.contributor.authorAlonso, F-
dc.contributor.authorAlpigiani, C-
dc.contributor.authorCamelia, EA-
dc.contributor.authorEstevez, MA-
dc.contributor.authorAlviggi, MG-
dc.contributor.authorCoutinho, YA-
dc.contributor.authorAmbler, A-
dc.contributor.authorAmelung, C-
dc.contributor.authorAmes, CG-
dc.contributor.authorAmidei, D-
dc.contributor.authorDos, Santos SPA-
dc.contributor.authorAmoroso, S-
dc.contributor.authorAmos, KR-
dc.contributor.authorAmrouche, CS-
dc.contributor.authorAnaniev, V-
dc.contributor.authorAnastopoulos, C-
dc.contributor.authorAndari, N-
dc.contributor.authorAndeen, T-
dc.contributor.authorAnders, JK-
dc.contributor.authorAndrean, SY-
dc.contributor.authorAndreazza, A-
dc.contributor.authorAngelidakis, S-
dc.contributor.authorAngerami, A-
dc.contributor.authorAnisenkov, AV-
dc.contributor.authorAnnovi, A-
dc.contributor.authorAntel, C-
dc.contributor.authorAnthony, MT-
dc.contributor.authorAntipov, E-
dc.contributor.authorAntonelli, M-
dc.contributor.authorAntrim, DJA-
dc.contributor.authorAnulli, F-
dc.contributor.authorAoki, M-
dc.contributor.authorAoki, T-
dc.contributor.authorPozo, JAA-
dc.contributor.authorAparo, MA-
dc.contributor.authorBella, LA-
dc.contributor.authorAppelt, C-
dc.contributor.authorAranzabal, N-
dc.contributor.authorFerraz, VA-
dc.contributor.authorArcangeletti, C-
dc.contributor.authorArce, ATH-
dc.contributor.authorHuang, S-
dc.contributor.authorParedes Hernandez, D-
dc.contributor.authorPeng, C-
dc.contributor.authorTam, KC-
dc.contributor.authorTu, Y-
dc.contributor.authoret al-
dc.date.accessioned2024-03-11T10:29:32Z-
dc.date.available2024-03-11T10:29:32Z-
dc.date.issued2023-05-12-
dc.identifier.citationPhysical Review C, 2023, v. 107, n. 5-
dc.identifier.issn2469-9985-
dc.identifier.urihttp://hdl.handle.net/10722/338521-
dc.description.abstractThe ATLAS detector at the Large Hadron Collider has been used to measure jet substructure modification and suppression in Pb+Pb collisions at a nucleon-nucleon center-of-mass energy root sNN = 5.02 TeV in comparison with proton-proton (pp) collisions at root s = 5.02 TeV. The Pb+Pb data, collected in 2018, have an integrated luminosity of 1.72 nb(-1), while the pp data, collected in 2017, have an integrated luminosity of 260 pb(-1). Jets used in this analysis are clustered using the anti-k(t) algorithm with a radius parameter R = 0.4. The jet constituents, defined by both tracking and calorimeter information, are used to determine the angular scale rg of the first hard splitting inside the jet by reclustering them using the Cambridge-Aachen algorithm and employing the soft-drop grooming technique. The nuclear modification factor, RAA, used to characterize jet suppression in Pb+Pb collisions, is presented differentially in rg, jet transverse momentum, and in intervals of collision centrality. The RAA value is observed to depend significantly on jet r(g). Jets produced with the largest measured r(g) are found to be twice as suppressed as those with the smallest rg in central Pb+Pb collisions. The RAA values do not exhibit a strong variation with jet p(T) in any of the rg intervals. The r(g) and p(T) dependence of jet RAA is qualitatively consistent with a picture of jet quenching arising from coherence and provides the most direct evidence in support of this approach.-
dc.languageeng-
dc.publisherAmerican Physical Society-
dc.relation.ispartofPhysical Review C-
dc.rightsThis work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.-
dc.titleMeasurement of substructure-dependent jet suppression in Pb plus Pb collisions at 5.02 TeV with the ATLAS detector-
dc.typeArticle-
dc.identifier.doi10.1103/PhysRevC.107.054909-
dc.identifier.scopuseid_2-s2.0-85166543312-
dc.identifier.volume107-
dc.identifier.issue5-
dc.identifier.eissn2469-9993-
dc.identifier.isiWOS:000996012800001-
dc.publisher.placeCOLLEGE PK-
dc.identifier.issnl2469-9985-

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