Transverse baryon flow as possible evidence for a quark-gluon-plasma phase

Journal Article · Mon Sep 16 04:00:00 EDT 1991 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.67.1519· OSTI ID:5244082

Levai, P; Mueller, B ^[1]

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1. Department of Physics, Duke University, Durham, North Carolina (USA)

In order to investigate the coupling between collective flow of nucleons and pions in hot pion-dominated hadronic matter, we calculate the pion-nucleon drag coefficient in linearized transport theory. We find that the characteristic time for flow equalization is longer than the time scale of the expansion of a hardonic fireball created in high-energy collisions. The analysis of transverse-momentum data from {ital p}+{ital {bar p}} collisions at {radical}{ital s} =1.8 TeV reveals the same flow velocity for mesons and antinucleons. We argue that this may be evidence for the formation of a quark-gluon plasma in these collisions.

• DOE Contract Number: FG05-90ER40592
• OSTI ID: 5244082
• Journal Information: Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 67:12; ISSN PRLTA; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

645204 -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Strong Interactions & Properties
653002* -- Nuclear Theory-- Nuclear Matter
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BARYONS
BOLTZMANN EQUATION
BOSONS
DIFFERENTIAL EQUATIONS
ELEMENTARY PARTICLES
ENERGY RANGE
EQUATIONS
FERMIONS
FIREBALL MODEL
GLUONS
HADRONS
LINEAR MOMENTUM
MATHEMATICAL MODELS
MATTER
MESONS
NUCLEAR MATTER
NUCLEONS
PARTIAL DIFFERENTIAL EQUATIONS
PARTICLE MODELS
PLASMA
POSTULATED PARTICLES
QUARKS
TEMPERATURE DEPENDENCE
TEV RANGE
TEV RANGE 01-10
TRANSVERSE MOMENTUM