System, centrality, and transverse mass dependence of two pion correlation radii in heavy ion collisions at 11.6-A-GeV and 14.6-A-GeV
Collaboration
17 pages
Published in:
- Phys.Rev.C 66 (2002) 054906
e-Print:
- nucl-ex/0204001 [nucl-ex]
Report number:
- UCRL-JC-147213
Experiments:
Citations per year
Abstract:
Two-pion correlation functions are analyzed at mid-rapidity for three systems (14.6 A-GeV Si+Al, Si+Au, and 11.6 A-GeV Au+Au), seven distinct centrality conditions, and different kT bins in the range 0.1--0.5 GeV/c. Source reference frames are determined from fits to the Yano-Koonin source parameterization. Bertsch-Pratt radius parameters are shown to scale linearly with both number of projectile and total participants as obtained from a Glauber model calculation. A finite emission duration that increases linearly with system/centrality is also reported. The mT dependence of the Bertsch-Pratt radii is measured for the central Si+Au and Au+Au systems. The system/centrality dependence is investigated separately for both high and low mT regions.Note:
- 17 pages, 12 figures Report-no: UCRL-JC-147213
- 25.75.-q
- scattering: heavy ion
- silicon
- aluminum
- gold
- hadron: multiple production
- correlation function: two-pion
- boson: statistics
- pi: formation
- parametrization
References(36)
Figures(13)