Event activity-dependence of jet production in p–Pb collisions at √sNN = 5.02 TeV measured with semi-inclusive hadron+jet correlations by ALICE
Acharya, Shreyasi; Adam, Jaroslav; Adamová, Dagmar; Adolfsson, Jonatan; Aggarwal, Madan M.; Aglieri Rinella, Gianluca; Agnello, Michelangelo; Agrawal, Nikita; Ahammed, Zubayer; Ahmad, Nazeer; Ahn, Sang Un; Alme, Johan; Altenkaemper, Lucas; Arsene, Ionut Christian; Bätzing, Paul Christoph; Djuvsland, Øystein; Dordic, Olja; Helstrup, Håvard; Hetland, Kristin Fanebust; Kileng, Bjarte; Langøy, Rune; Lardeux, Antoine Xavier; Lien, Jørgen; Lindal, Svein; Lønne, Per-Ivar; Mahmood, Sohail Musa; Milosevic, Jovan; Nesbø, Simon Voigt; Nystrand, Joakim; Rehman, Attiq ur; Richter, Matthias; Røed, Ketil; Røhrich, Dieter; Skaali, Toralf Bernhard; Tambave, Ganesh Jagannath; Tveter, Trine Spedstad; Ullaland, Kjetil; Velure, Arild; Wagner, Boris; Wikne, Jon Christopher; Zhang, Hui; Zhao, Chengxin; Zhou, Zhuo; Zhu, Hongsheng; Aiola, Salvatore; Akindinov, Alexander; Alam, Sk Noor; Alba, José Luis Bazo; Aleksandrov, Dimitry; Allesandro, B.; ALICE, Collaboration
Journal article, Peer reviewed
Published version
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http://hdl.handle.net/11250/2500178Utgivelsesdato
2017Metadata
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Sammendrag
We report measurement of the semi-inclusive distribution of charged-particle jets recoiling from a high transverse momentum (pT) hadron trigger, for p–Pb collisions at √sNN = 5.02 TeV, in p–Pb events classified by event activity. This observable has been measured in pp and Pb–Pb collisions at the LHC, providing a new probe to measure quenching. Jets are reconstructed from charged particle tracks using anti-kt with R = 0.4 and low IR cutoff of jet constituents (pT,track > 0.15 GeV/c). The complex uncorrelated jet background is corrected by a data-driven approach. Recoil jet distributions are reported for 15 < pchT,jet < 50 GeV/c. Events are classified by signal in the ALICE V0A detector, which measures forward multiplicity, and ZNA, which measures the number of neutrons at zero degrees. This self-normalized observable does not require scaling of reference distributions by _TpA_, thereby avoiding the need for geometric modeling. We compare the trigger-normalized recoil jet yield for p–Pb collisions with different event activity to measure the effects of jet quenching in small systems at the LHC.