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Study of Jet Quenching with Z+jet Correlations in Pb-Pb and pp Collisions at s NN=5.02 TeVSirunyan, A.M.Tumasyan, A.Adam, W.Asilar, E.Bergauer, T.Brandstetter, J.Brondolin, E.Dragicevic, M.Erö, J.Flechl, M.Friedl, M.Frühwirth, R.Ghete, V.M.Hartl, C.Hörmann, N.Hrubec, J.Jeitler, M.König, A.Krätschmer, I.Liko, D.Matsushita, T.Mikulec, I.Rabady, D.Rad, N.Rahbaran, B.Rohringer, H.Schieck, J.Strauss, J.Waltenberger, W.Wulz, C.-E.Chekhovsky, V.Dvornikov, O.Dydyshka, Y.Emeliantchik, I.Litomin, A.Makarenko, V.Mossolov, V.Stefanovitch, R.Suarez Gonzalez, J.Zykunov, V.Shumeiko, N.Alderweireldt, S.De Wolf, E.A.Janssen, X.Lauwers, J.Van De Klundert, M.Van Haevermaet, H.Van Mechelen, P.Van Remortel, N.Van Spilbeeck, A.BosonsGermanium alloysLead alloysAverage numbersCenter-of-mass energiesCentre-of-mass energiesData sampleDecay channelsJet quenchingNucleon-nucleonPb-Pb collisionsTransverse momentaZ BosonsBinary alloysThe production of jets in association with Z bosons, reconstructed via the μ+μ- and e+e- decay channels, is studied in pp and, for the first time, in Pb-Pb collisions. Both data samples were collected by the CMS experiment at the LHC, at a nucleon-nucleon center-of-mass energy of 5.02 TeV. The Pb-Pb collisions were analyzed in the 0%-30% centrality range. The back-to-back azimuthal alignment was studied in both pp and Pb-Pb collisions for Z bosons with transverse momentum pTZ>60 GeV/c and a recoiling jet with pTjet>30 GeV/c. The pT imbalance xjZ=pTjet/pTZ, as well as the average number of jet partners per Z, RjZ, was studied in intervals of pTZ. The RjZ is found to be smaller in Pb-Pb than in pp collisions, which suggests that in Pb-Pb collisions a larger fraction of partons associated with the Z bosons fall below the 30 GeV/c pTjet threshold because they lose energy. © 2017 CERN. © 2017 CERN, for the CMS Collaboration. Published by the American Physical Society under the terms of the "https://creativecommons.org/licenses/by/4.0/" Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.American Physical Society2017Articlehttps://rdlopen.rawdatalibrary.net/r/ebyu/14721https://doi.org/10.1103/physrevlett.119.0823010031-9007enPhysical Review Lettersinfo:eu-repo/semantics/openAccessinfo:eu-repo/semantics/articlehttps://ebyu-rdlopen.rawdatalibrary.net/tr/items/ebyu/14721