NUKLEONIKA 2004, 49(Supplement 2):s71-s76
AZIMUTHALLY-SENSITIVE INTERFEROMETRY AND THE SOURCE LIFETIME AT RHICMichael A. Lisa for the STAR Collaboration Physics Department, The Ohio State University, Columbus, OH 43210, USA Pion interferometry (HBT) measurements relative to the reaction plane provide an estimate of the transverse source anisotropy at freeze-out, which probes the system dynamics and evolution duration. Measurements by the STAR Collaboration indicate that the source is extended increasingly out-of-plane with increasing impact parameter, suggesting a short evolution duration roughly consistent with estimates based on azimuthally-integrated HBT measurements. Close X |