Boundary and Coulomb effects on boson systems in high-energy heavy-ion collisions

Journal Article · Sat Apr 01 00:00:00 EST 1995 · Physical Review, C (Nuclear Physics); (United States)

DOI:https://doi.org/10.1103/PhysRevC.51.2135· OSTI ID:6587829

Mostafa, M G; Wong, C ^[1]

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1. Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6373 (United States) Physics Department, Faculty of Science, Ain Shams University, Cairo (Egypt)

The boundary of a boson system plays an important role in determining the momentum distribution of the bosons. For a boson system with a cylindrical boundary, the momentum distribution is enhanced at high transverse momenta but suppressed at low transverse momenta, relative to a Bose-Einstein distribution. The boundary effects on systems of massless gluons and massive pions are studied. For gluons in a quark-gluon plasma, the presence of the boundary may modify the signals for the quark-gluon plasma. For pions in a pion system in heavy-ion collisions, Coulomb final-state interactions with the nuclear participants in the vicinity of the central rapidity region further modify the momentum distribution at low transverse momenta. By including both the boundary effect and the Coulomb final-state interactions we are able to account for the behavior of the [pi][sup [minus]] transverse momentum spectrum observed in many heavy-ion experiments, notably at low transverse momenta.

• DOE Contract Number: AC05-84OR21400
• OSTI ID: 6587829
• Journal Information: Physical Review, C (Nuclear Physics); (United States), Vol. 51:4; ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BOUNDARY CONDITIONS
BOSONS
COULOMB CORRECTION
HEAVY ION REACTIONS
BOSE-EINSTEIN STATISTICS
CYLINDRICAL CONFIGURATION
DISTRIBUTION
FINAL-STATE INTERACTIONS
GLUONS
MASSLESS PARTICLES
PIONS
QUARK MATTER
SPECTRA
TRANSVERSE MOMENTUM
CHARGED-PARTICLE REACTIONS
CONFIGURATION
CORRECTIONS
ELEMENTARY PARTICLES
HADRONS
INTERACTIONS
LINEAR MOMENTUM
MATTER
MESONS
NUCLEAR REACTIONS
POSTULATED PARTICLES
PSEUDOSCALAR MESONS
662340* - Hadron Interactions- (1992-)
662230 - Quantum Chromodynamics- (1992-)
663300 - Nuclear Reactions & Scattering
General- (1992-)
663450 - Heavy-Ion-Induced Reactions & Scattering- (1992-)