| ||
The RHIC HBT Puzzle, Chiral Symmetry
Restoration, and Pion Opacity
Presenting Author: Prof. John G. Cramer
Author(s): John G. Cramer and Gerald A. Miller
Abstract:
We present a resolution of the RHIC HBT Puzzle, a relativistic quantum wave-mechanical treatment of the opacity and refractive effects of pions emerging from a hot dense expanding source. The model assumes that the initial medium achieves partial chiral symmetry restoration, which produces a very deep momentum-dependent complex potential. The Klein-Gordon equation with Bjorken-cylinder geometry is solved for distorted waves representing the emerging pions. These waves are combined with a hydro-inspired pion source function to predict HBT radii and pion spectra. The model has acheieved excellent HBT radii and spectrum fits to RHIC sqrt(s_NN)=200 GeV Au+Au data from STAR and to CERN Pb+Pb data from NA49, reproducing the observed small source sizes, Ro/Rs~1, and the low-momentum behavior of the radii. The calculations represent a new tool for investigating the presence and characteristics of chiral symmetry restoration in heavy ion collisions. Attached papers on John G. Cramer's Home Pageback to the Archives home to the Parallel talks to the Posters |