Journal article

Publication year: 2000

Pages: 376-386

Journal: Nuclear Physics A: Nuclear and Hadronic Physics

Volume number: 672

Issue number: 1-4

ISSN: 0375-9474

eISSN: 1873-1554

Open access status: Green

DOI Link: https://doi.org/10.1016/S0375-9474(99)00854-4

Publisher: Elsevier

Abstract: 
We analyze the baryon sideward and elliptic flow from SIS (0.25-2A GeV) to AGS (2-11.0A GeV) energies for Au + Au collisions in the relativistic transport model RBUU that includes all baryon resonances up to a mass of 2 GeV as well as string degrees of freedom for the higher mass continuum. There are two factors which dominantly determine the baryon flow at these energies: the momentum dependence of the scalar and vector potentials and the resonance-string degrees of freedom. We fix the explicit momentum dependence of the nucleon-meson couplings within the NL3 parameter set by the nucleon optical potential up to 1 GeV of kinetic energy. When assuming the optical potential to vanish identically for E-kin greater than or equal to 3.5 GeV we simultaneously reproduce the sideward flow data of the FOPI, EOS, E895 and E877 collaborations, the elliptic flow data of the EOS, E895 and E877 collaborations, and approximately the rapidity and transverse mass distribution of protons at ACS energies. The gradual change from hadronic to string degrees of freedom with increasing bombarding energy can be viewed as a transition from hadronic to string matter, i.e. a dissolution of hadrons, (C) 2000 Elsevier Science B.V. All rights reserved.

Harvard Citation style: Sahu, P., Cassing, W., Mosel, U. and Ohnishi, A. (2000) Baryon flow from SIS to AGS energies, Nuclear Physics A: Nuclear and Hadronic Physics, 672(1-4), pp. 376-386. https://doi.org/10.1016/S0375-9474(99)00854-4

APA Citation style: Sahu, P., Cassing, W., Mosel, U., & Ohnishi, A. (2000). Baryon flow from SIS to AGS energies. Nuclear Physics A: Nuclear and Hadronic Physics. 672(1-4), 376-386. https://doi.org/10.1016/S0375-9474(99)00854-4