Hanbury-Brown–Twiss analysis of anisotropic transverse flow

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Abstract
The effects of anisotropic transverse collective flow on the Hanbury-Brown–Twiss (HBT) correlation function is studied. There exist three different physics contributions related to flow which affect the correlation function: anisotropic source shape, anisotropic space-momentum correlations in pion emission, and the effects related to the HBT measurement of the size of a moving source in different reference frames. Resolution of these contributions experimentally can lead to a detailed understanding of both collective flow in nucleus-nucleus collisions and the HBT technique itself. A method is presented which permits the derivation of model independent relations between the radius of a source measured in a frame in which it is moving and in its rest frame. © 1996 The American Physical Society.
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