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Interferometry for rotating sources
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DOI：10.1016/j.physletb.2016.04.039.png)
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Abstract
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The two particle interferometry method to determine the size of the emitting source after a heavy ion collision is extended. Following the extension of the method to spherical expansion dynamics, here we extend the method to rotating systems. It is shown that rotation of a cylindrically symmetric system leads to modifications, which can be perceived as spatial asymmetry by the azimuthal HBT method. We study an exact rotating and expanding solution of the fluid dynamical model of heavy ion reactions. We consider a source that is azimuthally symmetric in space around the axis of rotation, and discuss the features of the resulting two particle correlation function. This shows the azimuthal asymmetry arising from the rotation. We show that this asymmetry leads to results similar to those given by spatially asymmetric sources. (C) 2016 The Authors. Published by Elsevier B.V.
Keywords:
Hanbury Brown and Twiss method
Rotation
Peripheral collisions
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