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Centrality and collision system dependence of antiproton production from p+A to Au+Au collisions at AGS energies

Conference ·
OSTI ID:645598
 [1];  [2];  [3]
  1. Univ. of Tsukuba, Ibaraki (Japan)
  2. Massachusetts Inst. of Tech., Cambridge, MA (United States)
  3. KEK, Tanashi, Tokyo (Japan); and others
+ Show Author Affiliations
Antiproton production in heavy ion collisions reflects subtle interplay between initial production and absorption by nucleons. Because the AGS energies (10--20 A{center_dot}GeV/c) are close to the antiproton production threshold, antiproton may be sensitive to cooperative processes such as QGP and hadronic multi-step processes. On the other hand, antiproton has been proposed as a probe of baryon density due to large N{anti N} annihilation cross sections. Cascade models predict the maximum baryon density reaches about 10 times the normal nucleus density in central Au+Au collisions, where the strong antiproton absorption is expected. In this paper, the authors show systematic studies of antiproton production from p+A to Au+Au collisions.
Research Organization:
Columbia Univ., New York, NY (United States); Brookhaven National Lab., Upton, NY (United States); Massachusetts Inst. of Tech., Cambridge, MA (United States); Univ. of California, Riverside, CA (United States); Lawrence Livermore National Lab., CA (United States)
Sponsoring Organization:
USDOE Office of Energy Research, Washington, DC (United States); National Aeronautics and Space Administration, Washington, DC (United States); Korea Science and Engineering Foundation (Korea, Republic of); Ministry of Education, Science and Culture (Japan)
DOE Contract Number:
FG02-86ER40281; AC02-98CH10886; AC02-76ER03069; FG03-86ER40271; W-7405-ENG-48
OSTI ID:
645598
Report Number(s):
BNL--65375; CONF-971231--; ON: DE98004992; BR: KB0201000; CNN: Contract NASA NGR-05-003-513; Contract KOSEF 951-0202-032-2
Country of Publication:
United States
Language:
English

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Related Subjects

66 PHYSICS
ANTIPROTONS
GEV RANGE 10-100
GOLD 197 REACTIONS
GOLD 197 TARGET
HEAVY ION REACTIONS
PARTICLE PRODUCTION
PROTON REACTIONS
QUARK MATTER