Jet Shapes of Isolated Photon-Tagged Jets in Pb-Pb and pp Collisions at √SNN=5.02 TeV

被引:29
作者
Sirunyan, A. M. [1 ]
Tumasyan, A. [1 ]
Adam, W. [2 ]
Ambrogi, F. [2 ]
Asilar, E. [2 ]
Bergauer, T. [2 ]
Brandstetter, J. [2 ]
Dragicevic, M. [2 ]
Ero, J. [2 ]
Del Valle, A. Escalante [2 ]
Flechl, M. [2 ]
Fruhwirth, R. [2 ]
Ghete, V. M. [2 ]
Hrubec, J. [2 ]
Jeitler, M. [2 ,205 ]
Krammer, N. [2 ]
Kratschmer, I. [2 ]
Liko, D. [2 ]
Madlener, T. [2 ]
Mikulec, I. [2 ]
Rad, N. [2 ]
Rohringer, H. [2 ]
Schieck, J. [2 ,205 ]
Schofbeck, R. [2 ]
Spanring, M. [2 ]
Spitzbart, D. [2 ]
Taurok, A. [2 ]
Waltenberger, W. [2 ]
Wittmann, J. [2 ]
Wulz, C. -E. [2 ,205 ]
Zarucki, M. [2 ]
Chekhovsky, V. [3 ]
Mossolov, V. [3 ]
Gonzalez, J. Suarez [3 ]
De Wolf, E. A. [4 ]
Di Croce, D. [4 ]
Janssen, X. [4 ]
Lauwers, J. [4 ]
Pieters, M. [4 ]
Van Haevermaet, H. [4 ]
Van Mechelen, P. [4 ]
Van Remortel, N. [5 ]
Abu Zeid, S. [5 ]
Blekman, F. [5 ]
D'Hondt, J. [5 ]
De Bruyn, I. [5 ]
De Clercq, J. [5 ]
Deroover, K. [5 ]
Flouris, G. [5 ]
Lontkovskyi, D. [5 ]
机构
[1] Yerevan Phys Inst, Yerevan, Armenia
[2] Inst Hochenergiephys, Vienna, Austria
[3] Inst Nucl Problems, Minsk, BELARUS
[4] Univ Antwerp, Antwerp, Belgium
[5] Vrije Univ Brussel, Brussels, Belgium
[6] Univ Libre Bruxelles, Brussels, Belgium
[7] Univ Ghent, Ghent, Belgium
[8] Catholic Univ Louvain, Louvain, Belgium
[9] Ctr Brasileiro Pesquisas Fis, Rio De Janeiro, Brazil
[10] Univ Estado Rio de Janeiro, Rio De Janeiro, Brazil
[11] Univ Estadual Paulista, Sao Paulo, Brazil
[12] Univ Fed ABC, Sao Paulo, Brazil
[13] Bulgarian Acad Sci, Inst Nucl Res & Nucl Energy, Sofia, Bulgaria
[14] Univ Sofia, Sofia, Bulgaria
[15] Beihang Univ, Beijing, Peoples R China
[16] Inst High Energy Phys, Beijing, Peoples R China
[17] Peking Univ, State Key Lab Nucl Phys & Technol, Beijing, Peoples R China
[18] Tsinghua Univ, Beijing, Peoples R China
[19] Univ Los Andes, Bogota, Colombia
[20] Univ Split, Fac Elect Engn Mech Engn & Naval Architecture, Split, Croatia
[21] Univ Split, Fac Sci, Split, Croatia
[22] Inst Rudjer Boskov, Zagreb, Croatia
[23] Univ Cyprus, Nicosia, Cyprus
[24] Charles Univ Prague, Prague, Czech Republic
[25] Escuela Politec Nacl, Quito, Ecuador
[26] Univ San Francisco Quito, Quito, Ecuador
[27] Acad Sci Res & Technol Arab Republ Egypt, Egyptian Network High Energy Phys, Cairo, Egypt
[28] NICPB, Tallinn, Estonia
[29] Univ Helsinki, Dept Phys, Helsinki, Finland
[30] Helsinki Inst Phys, Helsinki, Finland
[31] Lappeenranta Univ Technol, Lappeenranta, Finland
[32] CEA, IRFU, Gif Sur Yvette, France
[33] Univ Paris Saclay, CNRS IN2P3, Ecole Polytech, Lab Leprince Ringuet, Palaiseau, France
[34] Univ Strasbourg, IPHC UMR 7178, CNRS, Strasbourg, France
[35] Ctr Calcul Inst Natl Phys Nucl & Phys Particules, CNRS IN2P3, Villeurbanne, France
[36] Univ Claude Bernard Lyon 1, Univ Lyon, CNRS IN2P3, Inst Phys Nucl Lyon, Villeurbanne, France
[37] Georgian Tech Univ, Tbilisi, Georgia
[38] Tbilisi State Univ, Tbilisi, Georgia
[39] RWTH Aachen Univ I, Phys Inst, Aachen, Germany
[40] RWTH Aachen Univ III, Phys Inst A, Aachen, Germany
[41] RWTH Aachen Univ III, Phys Inst B, Aachen, Germany
[42] DESY, Hamburg, Germany
[43] Univ Hamburg, Hamburg, Germany
[44] Karlsruher Inst Technol, Karlsruhe, Germany
[45] INPP, NCSR Demokritos, Aghia Paraskevi, Greece
[46] Natl & Kapodistrian Univ Athens, Athens, Greece
[47] Natl Tech Univ Athens, Athens, Greece
[48] Univ Ioannina, Ioannina, Greece
[49] Eotvos Lorand Univ, MTA ELTE Lendulet CMS Particle & Nucl Phys Grp, Budapest, Hungary
[50] Wigner Res Ctr Phys, Budapest, Hungary
基金
巴西圣保罗研究基金会; 芬兰科学院;
关键词
RADIATIVE ENERGY-LOSS; MOMENTUM DEPENDENCE; SUPPRESSION;
D O I
10.1103/PhysRevLett.122.152001
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
The modification of jet shapes in Pb-Pb collisions, relative to those in pp collisions, is studied for jets associated with an isolated photon. The data were collected with the CMS detector at the LHC at a nucleon- nucleon center-of-mass energy of 5.02 TeV. Jet shapes are constructed from charged particles with track transverse momenta (p(T)) above 1 GeV/c in annuli around the axes of jets with p(T)(jet) > 30 GeV/c associated with an isolated photon with p(T)(gamma) > 60 GeV/c. The jet shape distributions are consistent between peripheral Pb-Pb and pp collisions, but are modified for more central Pb-Pb collisions. In these central Pb-Pb events, a larger fraction of the jet momentum is observed at larger distances from the jet axis compared to pp, reflecting the interaction between the partonic medium created in heavy ion collisions and the traversing partons.
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页数:18
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