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dc.contributor.authorALICE Collaboration
dc.date.accessioned2015-11-04T06:28:51Z
dc.date.available2015-11-04T06:28:51Z
dc.date.issued2015
dc.identifier.citationALICE Collaboration. (2015). Measurement of jet quenching with semi-inclusive hadron-jet distributions in central Pb-Pb collisions at √sNN = 2.76 TeV. <i>Journal of High Energy Physics</i>, <i>2015</i>(9), Article 170. <a href="https://doi.org/10.1007/JHEP09(2015)170" target="_blank">https://doi.org/10.1007/JHEP09(2015)170</a>
dc.identifier.otherCONVID_25259854
dc.identifier.otherTUTKAID_67595
dc.identifier.urihttps://jyx.jyu.fi/handle/123456789/47564
dc.description.abstractWe report the measurement of a new observable of jet quenching in central Pb-Pb collisions at √ sNN = 2.76 TeV, based on the semi-inclusive rate of charged jets recoiling from a high transverse momentum (high-pT) charged hadron trigger. Jets are measured using collinear-safe jet reconstruction with infrared cutoff for jet constituents of 0.15 GeV, for jet resolution parameters R = 0.2, 0.4 and 0.5. Underlying event background is corrected at the event-ensemble level, without imposing bias on the jet population. Recoil jet spectra are reported in the range 20 < pch T,jet < 100 GeV. Reference distributions for pp collisions at √ s = 2.76 TeV are calculated using Monte Carlo and NLO pQCD methods, which are validated by comparing with measurements in pp collisions at √ s = 7 TeV. The recoil jet yield in central Pb-Pb collisions is found to be suppressed relative to that in pp collisions. No significant medium-induced broadening of the intra-jet energy profile is observed within 0.5 radians relative to the recoil jet axis. The angular distribution of the recoil jet yield relative to the trigger axis is found to be similar in central Pb-Pb and pp collisions, with no significant medium-induced acoplanarity observed. Large-angle jet deflection, which may provide a direct probe of the nature of the quasi-particles in hot QCD matter, is explored.
dc.language.isoeng
dc.publisherSpringer Berlin Heidelberg
dc.relation.ispartofseriesJournal of High Energy Physics
dc.subject.otherquark gluon plasma
dc.subject.otherjet physics
dc.subject.otherheavy ions
dc.titleMeasurement of jet quenching with semi-inclusive hadron-jet distributions in central Pb-Pb collisions at √sNN = 2.76 TeV
dc.typearticle
dc.identifier.urnURN:NBN:fi:jyu-201511033586
dc.contributor.laitosFysiikan laitosfi
dc.contributor.laitosDepartment of Physicsen
dc.type.urihttp://purl.org/eprint/type/JournalArticle
dc.date.updated2015-11-03T10:15:02Z
dc.type.coarjournal article
dc.description.reviewstatuspeerReviewed
dc.relation.issn1127-2236
dc.relation.numberinseries9
dc.relation.volume2015
dc.type.versionpublishedVersion
dc.rights.copyright© 2015 CERN, for the benefit of the ALICE Collaboration. This is an open access article funded by SCOAP3.
dc.rights.accesslevelopenAccessfi
dc.rights.urlhttp://creativecommons.org/licenses/by/4.0/
dc.relation.doi10.1007/JHEP09(2015)170


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© 2015 CERN, for the benefit of the ALICE Collaboration. This is an open access article funded by SCOAP3.
Except where otherwise noted, this item's license is described as © 2015 CERN, for the benefit of the ALICE Collaboration. This is an open access article funded by SCOAP3.