An analytic hydrodynamical model of rotating 3D expansion in heavy-ion collisions

Nagy, Márton and Csörgő, Tamás (2016) An analytic hydrodynamical model of rotating 3D expansion in heavy-ion collisions. INTERNATIONAL JOURNAL OF MODERN PHYSICS A, 31 (28-29). ISSN 0217-751X

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Abstract

A new exact and analytic solution of non-relativistic fireball hydrodynamics is presented. It describes an expanding triaxial ellipsoid that rotates around one of its principal axes. The observables are calculated using simple analytic formulas. Azimuthal oscillation of the off-diagonal Bertsch-Pratt radii of Bose-Einstein correlations as well as rapidity dependent directed and third flow measurements provide means to determine the magnitude of the rotation of the fireball. Observing this rotation and its dependence on collision energy may lead to new information on the equation of state of the strongly interacting quark gluon plasma produced in high energy heavy ion collisions.

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