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Photon Interferometry of Quark-Gluon Dynamics Revisited

A. Timmermann·M. Pluemer·L. V. Razumov·R. M. Weiner
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Abstract

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

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A. Timmermann, M. Pluemer, L. V. Razumov, R. M. Weiner. 1994-05-05. Photon Interferometry of Quark-Gluon Dynamics Revisited. https://doi.org/10.1103/physrevc.50.3060

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