Azimuthally sensitive femtoscopy in hydrodynamics with statistical hadronization from the BNL Relativistic Heavy Ion Collider to the CERN Large Hadron Collider

Adam Kisiel, Wojciech Broniowski, Mikołaj Chojnacki, and Wojciech Florkowski
Phys. Rev. C 79, 014902 – Published 15 January 2009

Abstract

Azimuthally sensitive femtoscopy for heavy-ion collisions at the Relativistic Heavy Ion Collider (RHIC) and Large Hadron Collider (LHC) is explored within the approach consisting of the hydrodynamics of perfect fluid followed by statistical hadronization. It is found that for the RHIC initial conditions, employing the Gaussian shape of the initial energy density, the very same framework that reproduces the standard soft observables [including the transverse-momentum spectra, the elliptic flow, and the azimuthally averaged Hanbury-Brown-Twiss (HBT) radii] leads to a proper description of the azimuthally sensitive femtoscopic observables; we find that the azimuthal variation of the side and out HBT radii as well as out-side cross term are very well reproduced for all centralities. Concerning the dependence of the femtoscopic parameters on kT we find that it is very well reproduced. The model is then extrapolated to the LHC energy. We predict the overall moderate growth of the HBT radii and the decrease of their azimuthal oscillations. Such effects are naturally caused by longer evolution times. In addition, we discuss in detail the space-time patterns of particle emission. We show that they are quite complex and argue that the overall shape seen by the femtoscopic methods cannot be easily disentangled on the basis of simple-minded arguments.

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  • Received 25 August 2008

DOI:https://doi.org/10.1103/PhysRevC.79.014902

©2009 American Physical Society

Authors & Affiliations

Adam Kisiel1,2,*, Wojciech Broniowski3,4,†, Mikołaj Chojnacki3,‡, and Wojciech Florkowski3,4,§

  • 1Faculty of Physics, Warsaw University of Technology, PL-00661 Warsaw, Poland
  • 2Department of Physics, Ohio State University, 1040 Physics Research Building, 191 West Woodruff Ave., Columbus, Ohio 43210, USA
  • 3The H. Niewodniczański Institute of Nuclear Physics, Polish Academy of Sciences, PL-31342 Kraków, Poland
  • 4Institute of Physics, Jan Kochanowski University, PL-25406 Kielce, Poland

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Vol. 79, Iss. 1 — January 2009

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