Title
Observation and studies of jet quenching in PbPb collisions at √s<inf>NN</inf>=2.76 TeV
Date Issued
12 August 2011
Access level
open access
Resource Type
journal article
Author(s)
Chatrchyan S.
Khachatryan V.
Sirunyan A.M.
Tumasyan A.
Adam W.
Bergauer T.
Dragicevic M.
Erö J.
Fabjan C.
Friedl M.
Frühwirth R.
Ghete V.M.
Hammer J.
Hänsel S.
Hartl C.
Hoch M.
Hörmann N.
Hrubec J.
Jeitler M.
Kasieczka G.
Kiesenhofer W.
Krammer M.
Liko D.
Mikulec I.
Pernicka M.
Rohringer H.
Schöfbeck R.
Strauss J.
Teischinger F.
Wagner P.
Waltenberger W.
Walzel G.
Widl E.
Wulz C.E.
Mossolov V.
Shumeiko N.
Suarez Gonzalez J.
Benucci L.
De Wolf E.A.
Janssen X.
Maes T.
Mucibello L.
Ochesanu S.
Roland B.
Rougny R.
Selvaggi M.
Van Haevermaet H.
Van Mechelen P.
Van Remortel N.
Beauceron S.
Blekman F.
Blyweert S.
D'Hondt J.
Devroede O.
Gonzalez Suarez R.
Kalogeropoulos A.
Maes J.
Maes M.
Van Doninck W.
Van Mulders P.
Van Onsem G.P.
Villella I.
Charaf O.
Clerbaux B.
De Lentdecker G.
Dero V.
Gay A.P.R.
Hammad G.H.
Hreus T.
Marage P.E.
Thomas L.
Vander Velde C.
Vanlaer P.
Wickens J.
Adler V.
Costantini S.
Grunewald M.
Klein B.
Marinov A.
McCartin J.
Ryckbosch D.
Thyssen F.
Tytgat M.
Vanelderen L.
Verwilligen P.
Walsh S.
Zaganidis N.
Basegmez S.
Bruno G.
Caudron J.
Ceard L.
Cortina Gil E.
Delaere C.
Favart D.
Giammanco A.
Grégoire G.
Hollar J.
Lemaitre V.
Liao J.
Militaru O.
Publisher(s)
American Physical Society
Abstract
Jet production in PbPb collisions at a nucleon-nucleon center-of-mass energy of 2.76 TeV was studied with the Compact Muon Solenoid (CMS) detector at the LHC, using a data sample corresponding to an integrated luminosity of 6.7μb-1. Jets are reconstructed using the energy deposited in the CMS calorimeters and studied as a function of collision centrality. With increasing collision centrality, a striking imbalance in dijet transverse momentum is observed, consistent with jet quenching. The observed effect extends from the lower cutoff used in this study (jet pT=120 GeV/c) up to the statistical limit of the available data sample (jet pT≈210 GeV/c). Correlations of charged particle tracks with jets indicate that the momentum imbalance is accompanied by a softening of the fragmentation pattern of the second most energetic, away-side jet. The dijet momentum balance is recovered when integrating low transverse momentum particles distributed over a wide angular range relative to the direction of the away-side jet. © 2011 American Physical Society.
Volume
84
Issue
2
Language
English
OCDE Knowledge area
Física de partículas, Campos de la Física
Scopus EID
2-s2.0-80052186915
Source
Physical Review C - Nuclear Physics
ISSN of the container
0556-2813
Sponsor(s)
National Science Foundation 1068833 NSF
Science and Technology Facilities Council GRIDPP, ST/F006748/1, ST/F007094/1, ST/G502347/1, ST/H00081X/2, ST/I000410/1, ST/I002200/1, ST/I005912/1, ST/I505572/1 STFC
Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung 123501, 128079, 134939 SNF
Sources of information:
Directorio de Producción Científica
Scopus