Nature of the photon correlation function for quark-gluon plasma

Journal Article · Fri Jul 01 04:00:00 EDT 1994 · Physical Review, C (Nuclear Physics); (United States)

DOI:https://doi.org/10.1103/PhysRevC.50.505· OSTI ID:7103712

Srivastava, D K ^[1]; Kapusta, J I ^[2]

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1. Variable Energy Cyclotron Centre, 1/AF Bidhan Nagar, Calcutta 700 064 (India)
2. School of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota 55455 (United States)

The correlation function for intensity interferometry of high energy photons emitted from an expanding quark-gluon plasma is examined. It is reiterated that the correlation function for identical bosons emitted from two point sources is given by 1+cos([Delta][ital k][center dot][Delta][ital x]) and will oscillate between 0 and 2, depending on the values of the difference in the 4-momenta of the two bosons ([Delta][ital k]) and the difference in their 4-positions ([Delta][ital x]). Integration over smooth, realistic sources, relevant for very high energy nucleus-nucleus collisions, gives a correlation function which essentially decreases monotonically from 2 to 1 as the momentum difference becomes large. The oscillatory behavior seen in a recent work for certain momentum configurations is caused by an approximation which amounts to including only those sources for which the space-time rapidities are identical to the photon rapidities.

• DOE Contract Number: FG02-87ER40328
• OSTI ID: 7103712
• Journal Information: Physical Review, C (Nuclear Physics); (United States), Journal Name: Physical Review, C (Nuclear Physics); (United States) Vol. 50:1; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

662230 -- Quantum Chromodynamics-- (1992-)
663300 -- Nuclear Reactions & Scattering
General-- (1992-)
663450* -- Heavy-Ion-Induced Reactions & Scattering-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BOSONS
CHARGED-PARTICLE REACTIONS
CORRELATION FUNCTIONS
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
ENERGY RANGE
FIELD THEORIES
FUNCTIONS
GAMMA RADIATION
GLUONS
HEAVY ION REACTIONS
INTERFEROMETRY
IONIZING RADIATIONS
MASSLESS PARTICLES
MATTER
NUCLEAR REACTIONS
PHOTONS
POSTULATED PARTICLES
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
QUARK MATTER
RADIATIONS
RELATIVISTIC RANGE