Physics – Nuclear Physics – Nuclear Experiment
Scientific paper
2005-11-30
NUKLEONIKA 2006;51(Supplement 3): S55 - S58
Physics
Nuclear Physics
Nuclear Experiment
for the STAR Collaboration. 7 pages 2 figures Poster presented at 18th International Conference on Ultrarelativistic Nucleus-N
Scientific paper
We present the preliminary results on direct photon interferometry measurements in Au+Au collisions at $\sqrt{s_{\rm{NN}}}$ = 62.4 and 200 GeV using the STAR (Solenoidal Tracker at RHIC) detector. Photons are reconstructed via $e^+/e^-$ conversions in STAR Time Projection Chamber(TPC) and energy deposited by photons in STAR Barrel Electromagnetic Calorimeter(BEMC). The two-photon correlations are measured using (1) both photons measured using BEMC; (2) one photon from conversions and the other measured with BEMC. Both the methodologies and the possible constraints in the correlation function measurements are discussed.
Chattopadhyay Subhasis
Chikanian Alexei
Das Debasish
Finch Evan
Lin Guoji
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