Abstract
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(kx) and will oscillate between 0 and 2, depending on the values of the difference in the 4-momenta of the two bosons (k) and the difference in their 4-positions (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.
Original language | English (US) |
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Pages (from-to) | 505-508 |
Number of pages | 4 |
Journal | Physical Review C |
Volume | 50 |
Issue number | 1 |
DOIs | |
State | Published - 1994 |
Bibliographical note
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