Baryon Rapidity Loss in Relativistic Au+Au Collisions

Journal Article · Mon Mar 05 00:00:00 EST 2001 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.86.1970· OSTI ID:40205699

Back, B B; Betts, R R; Chang, J; Chang, W C; Chi, C Y; Chu, Y Y; Cumming, J B; Dunlop, J C; Eldredge, W; Fung, S Y ^[1]

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1. and others

An excitation function of proton rapidity distributions for different centralities is reported from AGS Experiment E917 for Au+Au collisions at 6, 8, and 10.8GeV/nucleon. The rapidity distributions from peripheral collisions have a valley at midrapidity which smoothly change to distributions that display a broad peak at midrapidity for central collisions. The mean rapidity loss increases with increasing beam energy, whereas the fraction of protons consistent with isotropic emission from a stationary source at midrapidity decreases with increasing beam energy. The data suggest that the stopping is substantially less than complete at these energies.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL
• Sponsoring Organization: (US)
• OSTI ID: 40205699
• Journal Information: Physical Review Letters, Vol. 86, Issue 10; Other Information: DOI: 10.1103/PhysRevLett.86.1970; Othernumber: PRLTAO000086000010001970000001; 027110PRL; PBD: 5 Mar 2001; ISSN 0031-9007
• Publisher: The American Physical Society
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
74 ATOMIC AND MOLECULAR PHYSICS
BARYONS
EXCITATION FUNCTIONS
PERIPHERAL COLLISIONS
PROTONS
VALLEYS