Elliptic flow: Transition from out-of-plane to in-plane emission in Au + Au collisions

E895 Collaboration

doi:10.1103/PhysRevLett.83.1295

Elliptic flow: Transition from out-of-plane to in-plane emission in Au + Au collisions

E895 Collaboration

Chemistry

Stony Brook University

Stony Brook University
University of California at Davis
Lawrence Berkeley National Laboratory
Columbia University
Ohio State University
Brookhaven National Laboratory
Purdue University
Harbin Institute of Technology
Kent State University
Carnegie Mellon University
Saint Mary's College
The University of Auckland

Research output: Contribution to journal › Article › peer-review

247 Scopus citations

Abstract

We have measured the proton elliptic flow excitation function for the Au + Au system spanning the beam energy range (2–8)AGeV. The excitation function shows a transition from negative to positive elliptic flow at a beam energy, E_tr∼4AGeV. Detailed comparisons with calculations from a relativistic Boltzmann equation are presented. The comparisons suggest a softening of the nuclear equation of state from a stiff form (K∼380MeV) at low beam energies (E_beam ≤ 2AGeV) to a softer form (K∼210MeV) at higher energies (E_beam = 4AGeV) where the calculated baryon density ρ∼4_ρ0.

Original language	English
Pages (from-to)	1295-1298
Number of pages	4
Journal	Physical Review Letters
Volume	83
Issue number	7
DOIs	https://doi.org/10.1103/PhysRevLett.83.1295
State	Published - 1999

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10.1103/PhysRevLett.83.1295

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@article{cd99bc2589124a5eb9559e421ee49da1,

title = "Elliptic flow: Transition from out-of-plane to in-plane emission in Au + Au collisions",

abstract = "We have measured the proton elliptic flow excitation function for the Au + Au system spanning the beam energy range (2–8)AGeV. The excitation function shows a transition from negative to positive elliptic flow at a beam energy, Etr∼4AGeV. Detailed comparisons with calculations from a relativistic Boltzmann equation are presented. The comparisons suggest a softening of the nuclear equation of state from a stiff form (K∼380MeV) at low beam energies (Ebeam ≤ 2AGeV) to a softer form (K∼210MeV) at higher energies (Ebeam = 4AGeV) where the calculated baryon density ρ∼4ρ0.",

author = "\{E895 Collaboration\} and C. Pinkenburg and Ajitanand, \{N. N.\} and Alexander, \{J. M.\} and M. Anderson and D. Best and Brady, \{F. P.\} and T. Case and W. Caskey and D. Cebra and Chance, \{J. L.\} and P. Chung and B. Cole and K. Crowe and Das, \{A. C.\} and Draper, \{J. E.\} and A. Elmaani and Gilkes, \{M. L.\} and S. Gushue and M. Heffner and Hirsch, \{A. S.\} and Hjort, \{E. L.\} and L. Huo and M. Justice and M. Kaplan and D. Keane and Kintner, \{J. C.\} and J. Klay and D. Krofcheck and Lacey, \{R. A.\} and J. Lauret and C. Law and Lisa, \{M. A.\} and H. Liu and Liu, \{Y. M.\} and \{Mc Grath\}, R. and Z. Milosevich and G. Odyniec and Olson, \{D. L.\} and Panitkin, \{S. Y.\} and Porile, \{N. T.\} and G. Rai and Ritter, \{H. G.\} and Romero, \{J. L.\} and R. Scharenberg and L. Schroeder and B. Srivastava and Stone, \{N. T.B.\} and Symons, \{T. J.M.\} and J. Whitfield and T. Wienold",

year = "1999",

doi = "10.1103/PhysRevLett.83.1295",

language = "English",

volume = "83",

pages = "1295--1298",

journal = "Physical Review Letters",

issn = "0031-9007",

number = "7",

}

TY - JOUR

T1 - Elliptic flow

T2 - Transition from out-of-plane to in-plane emission in Au + Au collisions

AU - E895 Collaboration

AU - Pinkenburg, C.

AU - Ajitanand, N. N.

AU - Alexander, J. M.

AU - Anderson, M.

AU - Best, D.

AU - Brady, F. P.

AU - Case, T.

AU - Caskey, W.

AU - Cebra, D.

AU - Chance, J. L.

AU - Chung, P.

AU - Cole, B.

AU - Crowe, K.

AU - Das, A. C.

AU - Draper, J. E.

AU - Elmaani, A.

AU - Gilkes, M. L.

AU - Gushue, S.

AU - Heffner, M.

AU - Hirsch, A. S.

AU - Hjort, E. L.

AU - Huo, L.

AU - Justice, M.

AU - Kaplan, M.

AU - Keane, D.

AU - Kintner, J. C.

AU - Klay, J.

AU - Krofcheck, D.

AU - Lacey, R. A.

AU - Lauret, J.

AU - Law, C.

AU - Lisa, M. A.

AU - Liu, H.

AU - Liu, Y. M.

AU - Mc Grath, R.

AU - Milosevich, Z.

AU - Odyniec, G.

AU - Olson, D. L.

AU - Panitkin, S. Y.

AU - Porile, N. T.

AU - Rai, G.

AU - Ritter, H. G.

AU - Romero, J. L.

AU - Scharenberg, R.

AU - Schroeder, L.

AU - Srivastava, B.

AU - Stone, N. T.B.

AU - Symons, T. J.M.

AU - Whitfield, J.

AU - Wienold, T.

PY - 1999

Y1 - 1999

N2 - We have measured the proton elliptic flow excitation function for the Au + Au system spanning the beam energy range (2–8)AGeV. The excitation function shows a transition from negative to positive elliptic flow at a beam energy, Etr∼4AGeV. Detailed comparisons with calculations from a relativistic Boltzmann equation are presented. The comparisons suggest a softening of the nuclear equation of state from a stiff form (K∼380MeV) at low beam energies (Ebeam ≤ 2AGeV) to a softer form (K∼210MeV) at higher energies (Ebeam = 4AGeV) where the calculated baryon density ρ∼4ρ0.

AB - We have measured the proton elliptic flow excitation function for the Au + Au system spanning the beam energy range (2–8)AGeV. The excitation function shows a transition from negative to positive elliptic flow at a beam energy, Etr∼4AGeV. Detailed comparisons with calculations from a relativistic Boltzmann equation are presented. The comparisons suggest a softening of the nuclear equation of state from a stiff form (K∼380MeV) at low beam energies (Ebeam ≤ 2AGeV) to a softer form (K∼210MeV) at higher energies (Ebeam = 4AGeV) where the calculated baryon density ρ∼4ρ0.

UR - https://www.scopus.com/pages/publications/0007226963

U2 - 10.1103/PhysRevLett.83.1295

DO - 10.1103/PhysRevLett.83.1295

M3 - Article

SN - 0031-9007

VL - 83

SP - 1295

EP - 1298

JO - Physical Review Letters

JF - Physical Review Letters

IS - 7

ER -

Elliptic flow: Transition from out-of-plane to in-plane emission in Au + Au collisions

Abstract

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