Published March 14, 2003 | Version v1
Journal article Metadata-only

Rapidity dependence of charged antihadron to hadron ratios in Au+Au collisions at √(sNN)=200 GeV

Creators

  • 1. Niels Bohr Institute, Blegdamsvej 17, University of Copenhagen, Copenhagen 2100 (Denmark)
  • 2. Brookhaven National Laboratory, Upton, New York 11973 (United States)

Description

We present ratios of the numbers of charged antihadrons to hadrons (pions, kaons, and protons) in Au+Au collisions at √(sNN)=200 GeV as a function of rapidity in the range y=0-3. While the ratios at midrapidity are approaching unity, the K-/K+ and p(bar sign)/p ratios decrease significantly at forward rapidities. An interpretation of the results within the statistical model indicates a reduction of the baryon chemical potential from μB≅130 MeV at y=3 to μB≅25 MeV at y=0

Additional details

Identifiers

DOI
10.1103/PhysRevLett.90.102301;
arXiv
arXiv:nucl-ex/0207006v1;

Publishing Information

Journal Title
Physical Review Letters
Journal Volume
90
Journal Issue
10
Journal Page Range
p. 102301-102301.4
ISSN
0031-9007
CODEN
PRLTAO

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
35030527
Subject category
S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
Descriptors DEI
ANTIKAONS; ANTIPROTONS; COLLIDING BEAMS; GEV RANGE 100-1000; GOLD 197 BEAMS; GOLD 197 REACTIONS; GOLD 197 TARGET; KAONS; PARTICLE PRODUCTION; PIONS; PROTONS; RESONANCE PARTICLES
Descriptors DEC
ANTIBARYONS; ANTIMATTER; ANTINUCLEI; ANTINUCLEONS; ANTIPARTICLES; BARYONS; BEAMS; BOSONS; ELEMENTARY PARTICLES; ENERGY RANGE; FERMIONS; GEV RANGE; HADRONS; HEAVY ION REACTIONS; ION BEAMS; KAONS; MATTER; MESONS; NUCLEAR REACTIONS; NUCLEI; NUCLEONS; PROTONS; PSEUDOSCALAR MESONS; STRANGE MESONS; STRANGE PARTICLES; TARGETS

Optional Information

Notes
(c) 2003 The American Physical Society
Collaborations
BRAHMS Collaboration