Determining the BDMPS transport coefficient via medium-modified fragmentation functions

Details Determining the BDMPS transport coefficient via medium-modified fragmentation functions Determining the BDMPS transport coefficient via medium-modified fragmentation functions

2002-09-03

arxiv.org/abs/hep-ph/0209025v1

Nucl.Phys. A715 (2003) 783-786

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, 4 postscript figures. Proceedings for Quark Matter 2002

Scientific paper

10.1016/S0375-9474(02)01488-4

In nucleus-nucleus collisions at RHIC and LHC, partons produced at high transverse momentum can undergo multiple scattering within the collision region prior to fragmenting into hadrons. We have studied the resulting medium-modified fragmentation function based on a calculation of the BDMPS-Z medium-induced gluon radiation for a dense, expanding medium of small finite extension. Here we explain how the BDMPS transport coefficient which measures the energy density attained in the collision, can be extracted from the observed modification of high-pt hadroproduction. We also comment on the significant remaining uncertainties in extracting the transport coefficient from data.

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