NATURE OF THE PHOTON-CORRELATION FUNCTION FOR QUARK-GLUON PLASMA

Citation
Dk. Srivastava et Ji. Kapusta, NATURE OF THE PHOTON-CORRELATION FUNCTION FOR QUARK-GLUON PLASMA, Physical review. C. Nuclear physics, 50(1), 1994, pp. 505-508
Citations number
13
Categorie Soggetti
Physics, Nuclear
ISSN journal
05562813
Volume
50
Issue
1
Year of publication
1994
Pages
505 - 508
Database
ISI
SICI code
0556-2813(1994)50:1<505:NOTPFF>2.0.ZU;2-6
Abstract
The correlation function for intensity interferometry of high energy p hotons 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(DELTAk . DELTAx) and will oscillate between 0 and 2, depending on the values of the difference i n the 4-momenta of the two bosons (DELTAk) and the difference in their 4-positions (DELTAx). Integration over smooth, realistic sources, rel evant for very high energy nucleus-nucleus collisions, gives a correla tion 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 a pproximation which amounts to including only those sources for which t he space-time rapidities are identical to the photon rapidities.