Particle Correlations with the PHENIX Experiment

Details Particle Correlations with the PHENIX Experiment Particle Correlations with the PHENIX Experiment

2002-05-02

arxiv.org/abs/nucl-ex/0205001v1

Physics

Nuclear Physics

Nuclear Experiment

Proceedings of the 18th Winter Workshop on Nuclear Dynamics

Scientific paper

Results of identical pion correlations from the first year of data collection with the PHENIX detector at RHIC (\snn=130GeV) are presented. PHENIX has good particle identification using an electromagnetic calorimeter for timing, leading to identified pions from .2 to 1 GeV/c. This extends the range of previously measured correlation radii at this energy to $$=633MeV/c. The beam energy dependence of the HBT radii are studied in depth and no significant dependence of the transverse radii is present. The longitudinal correlation length has a moderate energy dependence. Furthermore, theoretical predictions of $\Ro/\Rs$ severely underpredict the measured ratio, which is consistent with unity for all $k_T$. The implications of these results are considered.

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