Resolving the HBT Puzzle in Relativistic Heavy Ion Collision - INSPIRE

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Resolving the HBT Puzzle in Relativistic Heavy Ion Collision

Scott Pratt
(
- Michigan State U.
)

Nov, 2008

4 pages

Published in:

Phys.Rev.Lett. 102 (2009) 232301

e-Print:

0811.3363 [nucl-th]

DOI:

10.1103/PhysRevLett.102.232301

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Abstract: (arXiv)

Two particle correlation data from the Relativistic Heavy Ion Collider have provided detailed femtoscopic information describing the space-time structure of the emission of pions. This data had avoided description with hydrodynamic-based approaches, in contrast to the success of hydrodynamics in reproducing other classes of observables. This failure has inspired the term ``HBT puzzle'', where HBT refers to femtoscopic studies which were originally based on Hanbury-Brown Twiss interferometry. Here, the puzzle is shown to originate not from a single shortcoming of hydrodynamic models, but the combination of several effects: mainly including pre-thermalized acceleration, using a stiffer equation of state, and adding viscous corrections.

Note:

4 pages, 2 figures

25.75.Gz
25.75.Ld
heavy ion: scattering
correlation: two-particle
pi: emission
Hanbury-Brown-Twiss effect
hydrodynamics
equation of state
nuclear reaction: space-time
viscosity

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