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Title: Scaling Properties of Azimuthal Anisotropy in Au+Au and Cu+Cu Collisions at {radical}(s{sub NN})=200 GeV

Abstract

Differential measurements of elliptic flow (v{sub 2}) for Au+Au and Cu+Cu collisions at {radical}(s{sub NN})=200 GeV are used to test and validate predictions from perfect fluid hydrodynamics for scaling of v{sub 2} with eccentricity, system size, and transverse kinetic energy (KE{sub T}). For KE{sub T}{identical_to}m{sub T}-m up to {approx}1 GeV the scaling is compatible with hydrodynamic expansion of a thermalized fluid. For large values of KE{sub T} mesons and baryons scale separately. Quark number scaling reveals a universal scaling of v{sub 2} for both mesons and baryons over the full KE{sub T} range for Au+Au. For Au+Au and Cu+Cu the scaling is more pronounced in terms of KE{sub T}, rather than transverse momentum.

Authors:
; ; ; ; ; ; ;  [1]; ; ; ; ; ; ;  [2]; ; ; ; ;  [3]
  1. University of Colorado, Boulder, Colorado 80309 (United States)
  2. Joint Institute for Nuclear Research, 141980 Dubna (Russian Federation)
  3. Columbia University, New York, New York 10027 (United States) and Nevis Laboratories, Irvington, New York 10533 (US) (and others)
Publication Date:
OSTI Identifier:
20951251
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review Letters; Journal Volume: 98; Journal Issue: 16; Other Information: DOI: 10.1103/PhysRevLett.98.162301; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; ANISOTROPY; BARYONS; COLLIDING BEAMS; COPPER 63 BEAMS; COPPER 63 REACTIONS; COPPER 63 TARGET; GEV RANGE 100-1000; GOLD 197 BEAMS; GOLD 197 REACTIONS; GOLD 197 TARGET; KINETIC ENERGY; MESONS; QUARKS; TRANSVERSE MOMENTUM

Citation Formats

Adare, A., Bickley, A. A., Ellinghaus, F., Kelly, S., Kinney, E., Nagle, J. L., Seele, J., Wysocki, M., Afanasiev, S., Isupov, A., Litvinenko, A., Malakhov, A., Peresedov, V., Rukoyatkin, P., Zolin, L., Aidala, C., Bjorndal, M. T., Chi, C. Y., Cole, B. A., and D'Enterria, D. Scaling Properties of Azimuthal Anisotropy in Au+Au and Cu+Cu Collisions at {radical}(s{sub NN})=200 GeV. United States: N. p., 2007. Web. doi:10.1103/PHYSREVLETT.98.162301.
Adare, A., Bickley, A. A., Ellinghaus, F., Kelly, S., Kinney, E., Nagle, J. L., Seele, J., Wysocki, M., Afanasiev, S., Isupov, A., Litvinenko, A., Malakhov, A., Peresedov, V., Rukoyatkin, P., Zolin, L., Aidala, C., Bjorndal, M. T., Chi, C. Y., Cole, B. A., & D'Enterria, D. Scaling Properties of Azimuthal Anisotropy in Au+Au and Cu+Cu Collisions at {radical}(s{sub NN})=200 GeV. United States. doi:10.1103/PHYSREVLETT.98.162301.
Adare, A., Bickley, A. A., Ellinghaus, F., Kelly, S., Kinney, E., Nagle, J. L., Seele, J., Wysocki, M., Afanasiev, S., Isupov, A., Litvinenko, A., Malakhov, A., Peresedov, V., Rukoyatkin, P., Zolin, L., Aidala, C., Bjorndal, M. T., Chi, C. Y., Cole, B. A., and D'Enterria, D. Fri . "Scaling Properties of Azimuthal Anisotropy in Au+Au and Cu+Cu Collisions at {radical}(s{sub NN})=200 GeV". United States. doi:10.1103/PHYSREVLETT.98.162301.
@article{osti_20951251,
title = {Scaling Properties of Azimuthal Anisotropy in Au+Au and Cu+Cu Collisions at {radical}(s{sub NN})=200 GeV},
author = {Adare, A. and Bickley, A. A. and Ellinghaus, F. and Kelly, S. and Kinney, E. and Nagle, J. L. and Seele, J. and Wysocki, M. and Afanasiev, S. and Isupov, A. and Litvinenko, A. and Malakhov, A. and Peresedov, V. and Rukoyatkin, P. and Zolin, L. and Aidala, C. and Bjorndal, M. T. and Chi, C. Y. and Cole, B. A. and D'Enterria, D.},
abstractNote = {Differential measurements of elliptic flow (v{sub 2}) for Au+Au and Cu+Cu collisions at {radical}(s{sub NN})=200 GeV are used to test and validate predictions from perfect fluid hydrodynamics for scaling of v{sub 2} with eccentricity, system size, and transverse kinetic energy (KE{sub T}). For KE{sub T}{identical_to}m{sub T}-m up to {approx}1 GeV the scaling is compatible with hydrodynamic expansion of a thermalized fluid. For large values of KE{sub T} mesons and baryons scale separately. Quark number scaling reveals a universal scaling of v{sub 2} for both mesons and baryons over the full KE{sub T} range for Au+Au. For Au+Au and Cu+Cu the scaling is more pronounced in terms of KE{sub T}, rather than transverse momentum.},
doi = {10.1103/PHYSREVLETT.98.162301},
journal = {Physical Review Letters},
number = 16,
volume = 98,
place = {United States},
year = {Fri Apr 20 00:00:00 EDT 2007},
month = {Fri Apr 20 00:00:00 EDT 2007}
}