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arXiv · 0811.3363

Resolving the HBT Puzzle in Relativistic Heavy Ion Collision

Scott Pratt
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Abstract

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.

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Scott Pratt. 2008-11-20. Resolving the HBT Puzzle in Relativistic Heavy Ion Collision. https://doi.org/10.1103/physrevlett.102.232301

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