Bibcode
Khachatryan, V.; Sirunyan, 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.; Knünz, V.; König, A.; Krammer, M.; Krätschmer, I.; Liko, D.; Matsushita, T.; Mikulec, I.; Rabady, D.; Rad, N.; Rahbaran, B.; Rohringer, H.; Schieck, J.; Schöfbeck, R.; Strauss, J.; Treberer-Treberspurg, W.; Waltenberger, W.; Wulz, C.-E.; Mossolov, V.; Shumeiko, N.; Suarez Gonzalez, J.; Alderweireldt, S.; Cornelis, T.; de Wolf, E. A.; Janssen, X.; Knutsson, A.; Lauwers, J.; Luyckx, S.; van de Klundert, M.; van Haevermaet, H.; van Mechelen, P.; van Remortel, N.; van Spilbeeck, A.; Abu Zeid, S.; Blekman, F.; D'Hondt, J.; Daci, N.; de Bruyn, I.; Deroover, K.; Heracleous, N.; Keaveney, J.; Lowette, S.; Moreels, L.; Olbrechts, A.; Python, Q.; Strom, D.; Tavernier, S.; van Doninck, W.; van Mulders, P.; van Onsem, G. P.; van Parijs, I.; Barria, P.; Brun, H.; Caillol, C.; Clerbaux, B.; de Lentdecker, G.; Fasanella, G.; Favart, L.; Goldouzian, R.; Grebenyuk, A.; Karapostoli, G.; Lenzi, T.; Léonard, A.; Maerschalk, T.; Marinov, A.; Perniè, L.; Randle-Conde, A.; Seva, T.; Vander Velde, C.; Vanlaer, P.; Yonamine, R.; Zenoni, F.; Zhang, F.; Beernaert, K.; Benucci, L.; Cimmino, A.; Crucy, S.; Dobur, D.; Fagot, A.; Garcia, G.; Gul, M.; McCartin, J.; Ocampo Rios, A. A. et al.
Bibliographical reference
Journal of High Energy Physics, Volume 2016, article id. #156, 39 pp.
Advertised on:
2
2016
Citations
30
Refereed citations
24
Description
The quark-gluon plasma is studied via medium-induced changes to
correlations between jets and charged particles in PbPb collisions
compared to pp reference data. This analysis uses data sets from PbPb
and pp collisions with integrated luminosities of 166 μb-1
and 5.3 pb-1, respectively, collected at
&sqrt{s_{NN}}=2.76; TeV. The angular distributions of charged
particles are studied as a function of relative pseudorapidity (Δ
η) and relative azimuthal angle (Δ ϕ) with respect to
reconstructed jet directions. Charged particles are correlated with all
jets with transverse momentum ( p T) above 120 GeV, and with
the leading and subleading jets (the highest and second-highest in p
T, respectively) in a selection of back-to-back dijet events.
Modifications in PbPb data relative to pp reference data are
characterized as a function of PbPb collision centrality and charged
particle p T. A centrality-dependent excess of low- p
T particles is present for all jets studied, and is most
pronounced in the most central events. This excess of low- p
T particles follows a Gaussian-like distribution around the
jet axis, and extends to large relative angles of Δ η ≈ 1
and Δ ϕ ≈ 1. [Figure not available: see fulltext.]