J. Adams, University of Birmingham
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M. Calderón de la Barca Sánchez, University of California, Davis
J. Carroll, Lawrence Berkeley National Laboratory
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P. Chaloupka, Nuclear Physics Institute
S. Chattopadhyay, Variable Energy Cyclotron Centre
H.F. Chen, University of Science & Technology of China
Y. Chen, University of California, Los Angeles
S.P. Chernenko, Laboratory for High Energy
M. Cherney, Creighton University
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B. Choi, University of Texas at Austin
W. Christie, Brookhaven National Laboratory
J.P. Coffin, Institut de Recherches Subatomiques
T.M. Cormier, Wayne State University
J.G. Cramer, University of Washington
H.J. Crawford, University of California - Berkeley
D. Das, Variable Energy Cyclotron Centre
S. Das, Variable Energy Cyclotron Centre
A.A. Derevschikov, Institute of High Energy Physics
L. Didenko, Brookhaven National Laboratory
T. Dietel, University of Frankfurt
X. Dong, University of Science & Technology of China
J.E. Draper, University of California, Davis
F. Du, Yale University
A.K. Dubey, Institute of Physics
V.B. Dunin, Laboratory for High Energy
J.C. Dunlop, Brookhaven National Laboratory
M.R. Dutta Mazumdar, Variable Energy Cyclotron Centre
V. Eckardt, Max-Planck-Institut fur Physik
L.G. Efimov, Laboratory for High Energy
V. Emelianov, Moscow Engineering Physics Institute
J. Engelage, University of California - Berkeley
G. Eppley, Rice University
B. Erazmus, SUBATECH
M. Estienne, Institut de Recherches Subatomiques
P. Fachini, Brookhaven National Laboratory
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J. Faivre, Institut de Recherches Subatomiques
R. Fatemi, Massachusetts Institute of Technology
K. Filimonov, Lawrence Berkeley National Laboratory
P. Filip, Particle Physics Laboratory
E. Finch, Yale University
Y. Fisyak, Brookhaven National Laboratory
D. Flierl, University of Frankfurt
K.J. Foley, Brookhaven National Laboratory
J. Fu, Institute of Particle Physics, CCNU
C.A. Gagliardi, Texas A&M University
M.S. Ganti, Variable Energy Cyclotron Centre
T.D. Gutierrez, University of California, DavisFollow
N. Gagunashvili, Laboratory for High Energy
J. Gans, Yale University
L. Gaudichet, SUBATECH
M. Germain, Institut de Recherches Subatomiques
F. Geurts, Rice University
V. Ghazikhanian, University of California, Los Angeles
P. Ghosh, Variable Energy Cyclotron Centre
J.E. Gonzalez, University of California, Los Angeles
O. Grachov, Wayne State University
V. Grigoriev, Moscow Engineering Physics Institute (State University)
S. Gronstal, Creighton University
D. Grosnick, Valparaiso University
M. Guedon, Institut de Recherces Subatomiques
S.M. Guertin, University of California, Los Angeles
A. Gupta, University of Jammu
E. Gushin, Moscow Engineering Physics Institute (State University)
T.J. Hallman, Brookhaven National Laboratory
D. Hardtke, Lawrence Berkeley National Laboratory
J.W. Harris, Yale University
M. Heinz, Yale University
T.W. Henry, Texas A&M University
S. Hepplemann, Pennsylvania State University - Main Campus
T. Herston, Purdue University
B. Hippolyte, Institut de Recherches Subatomiques
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E. Hjort, Lawrence Berkeley National Laboratory
G.W. Hoffmann, University of Texas at Austin
M. Horsley, Yale University
H.Z. Huang, University of California, Los Angeles
S.L. Huang, University of Science & Technology of China
T.J. Humanic, Ohio State University - Main Campus
G. Igo, University of California, Los Angeles
A. Ishihara, University of Texas at Austin
P. Jacobs, Lawrence Berkeley National Laboratory
W.W. Jacobs, Indiana University
M. Janik, Warsaw University of Technology
I. Johnson, Lawrence Berkeley National Laboratory
P.G. Jones, University of Birmingham
E.G. Judd, University of California - Berkeley
S. Kabana, SUBATECH
M. Kaneta, Lawrence Berkeley National Laboratory
M. Kaplan, Carnegie Mellon University
D. Keane, Kent State University
J. Kiryluk, Massachusetts Institute of Technology
A. Kisiel, Warsaw University of Technology
J. Klay, Lawrence Berkeley National Laboratory
S.R. Klein, Lawrence Berkeley National Laboratory
A. Klyachko, Indiana University - Bloomington
D.D. Koetke, Valparaiso University
T. Kollegger, University of Frankfurt
A.S. Konstantinov, Institute of High Energy Physics
M. Kopytine, Kent State University
L. Kotchenda, Moscow Engineering Physics Institute (State University)
A.D. Kovalenko, Laboratory for High Energy
M. Kramer, City College of New York
P. Kravtsov, Moscow Engineering Physics Institute (State University)
K. Krueger, Argonne National Laboratory
C. Kuhn, Institut de Recherches Subatomiques
A.I. Kulikov, Laboratory for High Energy
A. Kumar, Panjab University
G.J. Kunde, Yale University
C.L. Kunz, Carnegie Mellon University
R. Kh. Kutuev, Particle Physics Laboratory (JINR)
A.A. Kuznetsov, Laboratory for High Energy
M.A.C. Lamont, Yale University
J.M. Landgraf, Brookhaven National Laboratory
S. Lange, University of Frankfurt
C.P. Lansdell, University of Texas at Austin
B. Lasiuk, Yale University
F. Laue, Brookhaven National Laboratory
J. Lauret, Brookhaven National Laboratory
A. Lebedev, Brookhaven National Laboratory
R. Lednicky, Particle Physics Laboratory
M. Leontiev, Institute of High Energy Physics
M.J. LeVine, Brookhaven National Laboratory
C. Li, University of Science and Technology of China
Q. Li, Wayne State University
S.J. Lindenbaum, City College of New York
M.A. Lisa, Ohio State University - Main Campus
F. Liu, Institute of Particle Physics, CCNU
L. Liu, Institute of Particle Physics, CCNU
Z. Liu, Institute of Particle Physics, CCNU
Q.J. Liu, University of Washington - Seattle Campus
T. Ljubicic, Brookhaven National Laboratory
W.J. Llope, Rice University
H. Long, University of California, Los Angeles
R.S. Longacre, Brookhaven National Laboratory
M. Lopez-Noriega, Ohio State University - Main Campus
W.A. Love, Brookhaven National Laboratory
T. Ludlam, Brookhaven National Laboratory
D. Lynn, Brookhaven National Laboratory
J.G. Ma, University of California, Los Angeles
Y.G. Ma, Shanghai Institute of Nuclear Research
D. Magestro, Ohio State University - Main Campus
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L.K. Mangotra, University of Jammu
D.P. Mahapatra, Institute of Physics
R. Majka, Yale University
R. Manweiler, Valparaiso University
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C. Markert, Yale University
L. Martin, SUBATECH
J.N. Marx, Lawrence Berkeley National Laboratory
H.S. Matis, Lawrence Berkeley National Laboratory
Yu.A. Matulenko, Institute of High Energy Physics
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F. Meissner, Lawrence Berkeley National Laboratory
Yu. Melnick, Institute of High Energy Physics
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M.L. Miller, Massachusetts Institute of Technology
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C.F. Moore, University of Texas at Austin
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V. Morozov, Lawrence Berkeley National Laboratory
M.M. de Moura, Universidade de Sao Paulo
M.G. Munhoz, Universidade de Sao Paulo
B.K. Nandi, Indian Institute of Technology Bombay
S.K. Nayak, University of Jammu
T.K. Nayak, Variable Energy Cyclotron Centre
J.M. Nelson, University of Birmingham
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V.A. Nikitin, Particle Physics Laboratory (JINR)
L.V. Nogach, Institute of High Energy Physics
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S.B. Nurushev, Institute of High Energy Physics
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A. Ogawa, Brookhaven National Laboratory
V. Okorokov, Moscow Engineering Physics Institute (State University)
M. Oldenburg, Lawrence Berkeley National Laboratory
D. Olson, Lawrence Berkeley National Laboratory
G. Paic, Ohio State University
S.U. Pandey, Wayne State University
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S.Y. Panitkin, Brookhaven National Laboratory
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T. Pawlak, Warsaw University of Technology
V. Perevoztchikov, Brookhaven National Laboratory
W. Peryt, Warsaw University of Technology
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S.C. Phatak, Institute of Physics
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M. Planinic, University of Zagreb
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O. Ravel, SUBATECH
R.L. Ray, University of Texas at Austin
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H.G. Ritter, Lawrence Berkeley National Laboratory
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L. Ruan, University of Science & Technology of China
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C. Suire, Brookhaven National Laboratory
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D. Thein, University of California, Los Angeles
J.H. Thomas, Lawrence Berkeley National Laboratory
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M. Tokarev, Laboratory for High Energy
M.B. Tonjes, Michigan State University
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V. Trofimov, Moscow Engineering Physics Institute (State University)
O.D. Tsai, University of California, Los Angeles
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D.G. Underwood, Argonne National Laboratory
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A.M. Vander Molen, Michigan State University
A.N. Vasiliev, Institute of High Energy Physics
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H. Ward, University of Texas at Austin
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A.E. Yakutin, Institute of High Energy Physics
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W.M. Zhang, Kent State University
Z.P. Zhang, University of Science & Technology of China
P.A. Żołnierczuk, Indiana University - Bloomington
R. Zoulkarneev, Particle Physics Laboratory (JINR)
Y. Zoulkarneeva, Particle Physics Laboratory (JINR)
A.N. Zubarev, Laboratory for High Energy (JINR)

Abstract

We present the first large-acceptance measurement of event-wise mean transverse momentum ⟨pt⟩ fluctuations for Au-Au collisions at nucleon-nucleon center-of-momentum collision energy √sNN = 130 GeV. The observed nonstatistical ⟨pt⟩ fluctuations substantially exceed in magnitude fluctuations expected from the finite number of particles produced in a typical collision. The r.m.s. fractional width excess of the event-wise ⟨pt⟩ distribution is 13.7±0.1(stat) ±1.3(syst)% relative to a statistical reference, for the 15% most-central collisions and for charged hadrons within pseudorapidity range |η|c. The width excess varies smoothly but nonmonotonically with collision centrality and does not display rapid changes with centrality which might indicate the presence of critical fluctuations. The reported ⟨pt⟩ fluctuation excess is qualitatively larger than those observed at lower energies and differs markedly from theoretical expectations. Contributions to ⟨pt⟩ fluctuations from semihard parton scattering in the initial state and dissipation in the bulk colored medium are discussed.

Disciplines

Physics

Number of Pages

10

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This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Physical Society. NOTE: At the time of publication, the author Thomas Gutierrez was not yet affiliated with Cal Poly.

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URL: https://digitalcommons.calpoly.edu/phy_fac/539