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Backward emission of protons in Au+Au collisions at 11.7 A.GeV/c

Conference ·
OSTI ID:10106240
 [1];  [2];  [3]
  1. Massachusetts Inst. of Tech., Cambridge, MA (United States)
  2. Tokyo Univ. (Japan). Inst. for Nuclear Study
  3. Brookhaven National Lab., Upton, NY (United States); and others
We present preliminary results for the emission of target rapidity protons in minimum bias and central 11.7 A.GeV/c Au+Au collisions. The data span the pseudo-rapidity range {vert_bar}{eta}{vert_bar} {le} 0.76 and proton kinetic energy range of 50 {le} E {le} 200 MeV. The slopes of the kinetic energy spectra and dN/d{eta} values for central and minimum bias collisions are strikingly similar. Comparison of the results to results for Si+Au and p+A shows that the shape of the dN/d{eta} distribution is independent of the reaction system or centrality suggesting that the spectator matter does not play a decisive role in determining the shape of the proton distributions at back angles for these systems at AGS energies.
Research Organization:
Lawrence Livermore National Lab., CA (United States)
Sponsoring Organization:
USDOE, Washington, DC (United States); National Aeronautics and Space Administration, Washington, DC (United States)
DOE Contract Number:
W-7405-ENG-48; AC02-76CH00016; W-31109-ENG-38
OSTI ID:
10106240
Report Number(s):
UCRL-JC--112926; CONF-930636--11; ON: DE94003637
Country of Publication:
United States
Language:
English