Physics – Nuclear Physics – Nuclear Experiment
Scientific paper
2008-08-10
Indian J.Phys.85:123-127,2011
Physics
Nuclear Physics
Nuclear Experiment
5 pages, 4 figures, submitted to the proceedings of the 24th Winter Workshop on Nuclear Dynamics
Scientific paper
10.1007/s12648-011-0029-3
Di-hadron correlation measurements have been used to probe di-jet production in collisions at RHIC. A strong suppression of the away-side high-pT yield in these measurements is direct evidence that high-pT partons lose energy as they traverse the strongly interacting medium. However, since the momentum of the trigger particle is not a good measure of the jet energy, azimuthal di-hadron correlations have limited sensitivity to the shape of the fragmentation function. We explore the possibility to better constrain the initial parton energy by using clusters of multiple high-pT hadrons in a narrow cone as the 'trigger particle' in the azimuthal correlation analysis. We present first results from this analysis of multi-hadron triggered correlated yields in Au+Au collisions at sqrt(sNN) = 200 GeV from STAR. The results are compared to Pythia calculations, and the implications for energy loss and jet fragmentation are discussed.
for the STAR Collaboration
Haag Brooke
No associations
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