A possible measurement of quark gluon plasma temperature in relativistic heavy ion collisions

Journal Article · Mon Feb 20 04:00:00 EST 1984 · AIP Conf. Proc.; (United States)

DOI:https://doi.org/10.1063/1.34358· OSTI ID:5873022

Liu, K F

A possible measurement of the quark gluon plasma temperature is proposed, provided that this state of matter is accessible in relativistic heavy ion collisions. The idea is based on the observation that there are several di-vector-meson resonances produced in J/psi radiative decay and hadronic collisions (i.e. rho/sup 0/rho/sup 0/ resonance at 1.65 GeV in J/psi radiative decay, 2/sup + +/ phiphi resonance at 2.16 GeV and 2.31 GeV in pp collision at 400 GeV/c and ..pi..p collision at 100 GeV/c, and JJ enhancement at 7 GeV in ..pi..p collisions at 280 GeV/c and 150 GeV/c) which are believed to originate from 2 gluons due to the OZI forbidden nature of these reactions. Upon interpreting these resonances as 2/sup + +/ Q/sup 2 -/Q/sup 2/ states, the calculated masses, widths, the decay modes, and the hadronic production cross sections are all consistent with the experimental data. Since the hadronic production cross sections depend on the gluon distribution function, we may try to map out the gluon distribution function in the quark gluon plasma by measuring various di-vector-meson resonances, i.e. rhorho, ..omega..phi, K(K(, phiphi, D(D(, JJ, etc. at different energies in relativistic heavy ion collisions. The information on the temperature of the quark gluon plasma can be extracted if the gluon distribution function simulates that of a Bose gas. Several complications are briefly discussed.

• Research Organization: Department of Physics and Astronomy, University of Kentucky, Lexington, Kentucky 40506
• DOE Contract Number: AS05-82ER40074
• OSTI ID: 5873022
• Journal Information: AIP Conf. Proc.; (United States), Journal Name: AIP Conf. Proc.; (United States) Vol. 110:1; ISSN APCPC
• Country of Publication: United States
• Language: English

Related Subjects

645207* -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Strong Interactions
Baryon No. Greater than 1-- (-1987)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BARYON-BARYON INTERACTIONS
BOSE-EINSTEIN STATISTICS
BOSONS
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
DISTRIBUTION FUNCTIONS
ELEMENTARY PARTICLES
FUNCTIONS
GLUONS
HADRON-HADRON INTERACTIONS
HADRONS
HEAVY ION REACTIONS
INTERACTIONS
MATTER
MESON RESONANCES
MESONS
NUCLEAR REACTIONS
NUCLEAR TEMPERATURE
NUCLEON-NUCLEON INTERACTIONS
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
POSTULATED PARTICLES
PROTON-NUCLEON INTERACTIONS
PROTON-PROTON INTERACTIONS
PSI RESONANCES
QUARK MATTER
RADIATIVE DECAY
RESONANCE PARTICLES
VECTOR MESONS