Measurement of jet quenching with semi-inclusive hadron-jet distributions in central Pb-Pb collisions at root s(NN)=2.76 TeV

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dc.contributor.author Adam, J.
dc.contributor.author Brucken, E. J.
dc.contributor.author Chang, B.
dc.contributor.author Hilden, T. E.
dc.contributor.author Kim, D. J.
dc.contributor.author Kral, J.
dc.contributor.author Mieskolainen, M. M.
dc.contributor.author Orava, R.
dc.contributor.author Rak, J.
dc.contributor.author Slupecki, M.
dc.contributor.author Snellman, T. W.
dc.contributor.author Trzaska, W. H.
dc.contributor.author Vargyas, M.
dc.contributor.author Viinikainen, J.
dc.contributor.author Räsänen, Sami Sakari
dc.contributor.author The ALICE collaboration
dc.date.accessioned 2018-10-01T14:11:01Z
dc.date.available 2018-10-01T14:11:01Z
dc.date.issued 2015-09-24
dc.identifier.citation Adam , J , Brucken , E J , Chang , B , Hilden , T E , Kim , D J , Kral , J , Mieskolainen , M M , Orava , R , Rak , J , Slupecki , M , Snellman , T W , Trzaska , W H , Vargyas , M , Viinikainen , J , Räsänen , S S & The ALICE Collaboration 2015 , ' Measurement of jet quenching with semi-inclusive hadron-jet distributions in central Pb-Pb collisions at root s(NN)=2.76 TeV ' , Journal of High Energy Physics , vol. 2015 , no. 9 , 170 , pp. 1-42 . https://doi.org/10.1007/JHEP09(2015)170
dc.identifier.other PURE: 57315503
dc.identifier.other PURE UUID: c8c1766c-b442-4c52-86d4-1882a881f494
dc.identifier.other WOS: 000362274600001
dc.identifier.other Scopus: 84943167400
dc.identifier.other ORCID: /0000-0001-8893-7401/work/48397263
dc.identifier.uri http://hdl.handle.net/10138/246123
dc.description.abstract We report the measurement of a new observable of jet quenching in central Pb-Pb collisions at root s(NN) = 2.76 TeV, based on the semi-inclusive rate of charged jets recoiling from a high transverse momentum (high-p T) 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 <p(T,jet)(ch) <100 GeV. Reference distributions for pp collisions at root s = 2.76TeV are calculated using Monte Carlo and NLO pQCD methods, which are validated by comparing with measurements in pp collisions at root s = 7TeV. 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. en
dc.format.extent 42
dc.language.iso eng
dc.relation.ispartof Journal of High Energy Physics
dc.rights cc_by
dc.rights.uri info:eu-repo/semantics/openAccess
dc.subject Quark gluon plasma
dc.subject Jet physics
dc.subject Heavy Ions
dc.subject HIGH TRANSVERSE-MOMENTUM
dc.subject HEAVY-ION COLLISIONS
dc.subject RECONSTRUCTED JETS
dc.subject ROOT-S-NN=2.76 TEV
dc.subject PP COLLISIONS
dc.subject SUPPRESSION
dc.subject DEPENDENCE
dc.subject MODEL
dc.subject DETECTOR
dc.subject SPECTRA
dc.subject 114 Physical sciences
dc.title Measurement of jet quenching with semi-inclusive hadron-jet distributions in central Pb-Pb collisions at root s(NN)=2.76 TeV en
dc.type Article
dc.contributor.organization Helsinki Institute of Physics
dc.description.reviewstatus Peer reviewed
dc.relation.doi https://doi.org/10.1007/JHEP09(2015)170
dc.relation.issn 1029-8479
dc.rights.accesslevel openAccess
dc.type.version publishedVersion

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