Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1994-05-05
Phys.Rev.C50:3060-3063,1994
Physics
High Energy Physics
High Energy Physics - Phenomenology
7 pages, LaTeX (+ 6 figs. in tar.Z.uu form), DMR-THEP-93-8/W
Scientific paper
10.1103/PhysRevC.50.3060
The Bose-Einstein correlations of photons emitted {}from a longitudinally expanding system of excited matter produced in ultrarelativistic heavy ion collision are studied. Two effects found in recent calculations -- that the correlation function in longitudinal direction exhibits oscillations, and that it takes values below unity -- are demonstrated to be numerical artefacts and/or the results of inappropriate approximations. Thus, the general quantum statistical bounds for the two particle correlation function of a chaotic source with Gaussian fluctuations are confirmed. Two different expressions for the two-photon inclusive distribution are considered. Depending on which of the two expressions is used in the calculation, the width of the correlation function may vary by as much as $30\%$. PACS numbers: 05.30.Jp, 13.85.Hd, 25.75.+r, 12.40.Ee
Pluemer M.
Razumov Leonid V.
Timmermann Axel
Weiner Richard M.
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