Measurements of neutrons in 11.5A GeV/c Au+Pb heavy-ion collisions

Journal Article · Wed Dec 01 04:00:00 EST 1999 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PhysRevC.60.064903· OSTI ID:20218016

Armstrong, T A ^[1]; Barish, K N ^[2]; Batsouli, S ^[3]; Bennett, S J ^[4]; Chikanian, A ^[3]; Coe, S D ^[3]; Cormier, T M ^[4]; Davies, R ^[5]; Dover, C B ^[6]; Fachini, P ^[4]

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1. Pennsylvania State University, University Park, Pennsylvania 16802 (United States)
2. University of California at Riverside, Riverside, California 92521 (United States)
3. Yale University, New Haven, Connecticut 06520 (United States)
4. Wayne State University, Detroit, Michigan 48201 (United States)
5. Purdue University, West Lafayette, Indiana 47907 (United States)
6. Brookhaven National Laboratory, Upton, New York 11973 (United States)

We present measurements from Brookhaven AGS Experiment 864 of neutron invariant multiplicity in 11.5A GeV/c Au+Pb collisions. The measurements span a rapidity range from center of mass to beam rapidity (y{sub beam}=3.2) and are presented as a function of event centrality. The results are compared with E864 measurements of proton invariant multiplicity and an average n/p ratio at hadronic freeze-out of 1.19{+-}.08 is determined for the rapidity range y=1.6 to y=2.4. We discuss briefly the implications of this ratio within a simple equilibrium model of the collision system. (c) 1999 The American Physical Society.

• OSTI ID: 20218016
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 6 Vol. 60; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
EXPERIMENTAL DATA
GOLD
HEAVY ION REACTIONS
LEAD
NEUTRONS
PARTICLE RAPIDITY
PROTONS