File Download
  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Measurement of angular and momentum distributions of charged particles within and around jets in Pb + Pb and pp collisions at √sNN = 5.02 TeV with the ATLAS detector

TitleMeasurement of angular and momentum distributions of charged particles within and around jets in Pb + Pb and pp collisions at √sNN = 5.02 TeV with the ATLAS detector
Authors
KeywordsHEAVY-ION COLLISIONS
FRAGMENTATION
MODEL
Issue Date2019
PublisherAmerican Physical Society. The Journal's web site is located at http://journals.aps.org/prc/
Citation
Physical Review C: covering nuclear physics, 2019, v. 100 n. 6, p. article no. 064901 How to Cite?
AbstractStudies of the fragmentation of jets into charged particles in heavy-ion collisions can provide information about the mechanism of jet quenching by the hot and dense QCD matter created in such collisions, the quark-gluon plasma. This paper presents a measurement of the angular distribution of charged particles around the jet axis in root s(NN) = 5.02 TeV Pb + Pb and pp collisions, using the ATLAS detector at the LHC. The Pb + Pb and pp data sets have integrated luminosities of 0.49 nb(-1) and 25 pb(-1), respectively. The measurement is performed for jets reconstructed with the anti-k(t) algorithm with radius parameter R = 0.4 and is extended to an angular distance of r = 0.8 from the jet axis. Results are presented as a function of Pb + Pb collision centrality and distance from the jet axis for charged particles with transverse momenta in the 1- to 63-GeV range, matched to jets with transverse momenta in the 126- to 316-GeV range and an absolute value of jet rapidity of less than 1.7. Modifications to the measured distributions are quantified by taking a ratio to the measurements in pp collisions. Yields of charged particles with transverse momenta below 4 GeV are observed to be increasingly enhanced as a function of angular distance from the jet axis, reaching a maximum at r = 0.6. Charged particles with transverse momenta above 4 GeV have an enhanced yield in Pb + Pb collisions in the jet core for angular distances up to r = 0.05 from the jet axis, with a suppression at larger distances.
Persistent Identifierhttp://hdl.handle.net/10722/280007
ISSN
2020 Impact Factor: 3.296
2020 SCImago Journal Rankings: 1.679
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorLO, CY-
dc.contributor.authorParedes Hernandez, D-
dc.contributor.authorSalvucci, A-
dc.contributor.authorTu, Y-
dc.contributor.authorATLAS Collaboration-
dc.date.accessioned2019-12-23T08:24:53Z-
dc.date.available2019-12-23T08:24:53Z-
dc.date.issued2019-
dc.identifier.citationPhysical Review C: covering nuclear physics, 2019, v. 100 n. 6, p. article no. 064901-
dc.identifier.issn2469-9985-
dc.identifier.urihttp://hdl.handle.net/10722/280007-
dc.description.abstractStudies of the fragmentation of jets into charged particles in heavy-ion collisions can provide information about the mechanism of jet quenching by the hot and dense QCD matter created in such collisions, the quark-gluon plasma. This paper presents a measurement of the angular distribution of charged particles around the jet axis in root s(NN) = 5.02 TeV Pb + Pb and pp collisions, using the ATLAS detector at the LHC. The Pb + Pb and pp data sets have integrated luminosities of 0.49 nb(-1) and 25 pb(-1), respectively. The measurement is performed for jets reconstructed with the anti-k(t) algorithm with radius parameter R = 0.4 and is extended to an angular distance of r = 0.8 from the jet axis. Results are presented as a function of Pb + Pb collision centrality and distance from the jet axis for charged particles with transverse momenta in the 1- to 63-GeV range, matched to jets with transverse momenta in the 126- to 316-GeV range and an absolute value of jet rapidity of less than 1.7. Modifications to the measured distributions are quantified by taking a ratio to the measurements in pp collisions. Yields of charged particles with transverse momenta below 4 GeV are observed to be increasingly enhanced as a function of angular distance from the jet axis, reaching a maximum at r = 0.6. Charged particles with transverse momenta above 4 GeV have an enhanced yield in Pb + Pb collisions in the jet core for angular distances up to r = 0.05 from the jet axis, with a suppression at larger distances.-
dc.languageeng-
dc.publisherAmerican Physical Society. The Journal's web site is located at http://journals.aps.org/prc/-
dc.relation.ispartofPhysical Review C: covering nuclear physics-
dc.rightsPhysical Review C: covering nuclear physics. Copyright © American Physical Society.-
dc.rightsCopyright [2019] by The American Physical Society. This article is available online at [http://dx.doi.org/10.1103/PhysRevC.100.064901].-
dc.rightsThis work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.-
dc.subjectHEAVY-ION COLLISIONS-
dc.subjectFRAGMENTATION-
dc.subjectMODEL-
dc.titleMeasurement of angular and momentum distributions of charged particles within and around jets in Pb + Pb and pp collisions at √sNN = 5.02 TeV with the ATLAS detector-
dc.typeArticle-
dc.identifier.emailParedes Hernandez, D: dparedes@hku.hk-
dc.identifier.emailTu, Y: yanjuntu@hku.hk-
dc.identifier.authorityTu, Y=rp01971-
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1103/PhysRevC.100.064901-
dc.identifier.scopuseid_2-s2.0-85077627061-
dc.identifier.hkuros308792-
dc.identifier.volume100-
dc.identifier.issue6-
dc.identifier.spagearticle no. 064901-
dc.identifier.epagearticle no. 064901-
dc.identifier.isiWOS:000499977600003-
dc.publisher.placeUnited States-
dc.identifier.issnl2469-9985-

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats