TY - JOUR
T1 - Centrality dependence of the expansion dynamics in Pb-Pb collisions at 158 GeV c⁻¹
AU - Antinori, F
AU - Bloodworth, Ian
AU - Evans, David
AU - Tudor Jones, Goronwy
AU - Kinson, John
AU - Norman, Paul
AU - Thompson, Michael
AU - Villalobos Baillie, Orlando
AU - Votruba, Milan
PY - 2001/1/1
Y1 - 2001/1/1
N2 - Two-particle correlation functions of negatively charged hadrons from Pb-Pb collisions at 158 GeV c(-1)/nucleon have been measured by the WA97 experiment at the CERN SPS. A Coulomb correction procedure that assumes an expanding source has been implemented. Within the framework of an expanding thermalized source model the size and dynamical state of the collision fireball at freeze-out have been reconstructed as a function of the centrality of the collision. Less central collisions exhibit a different dynamics than central ones: both transverse and longitudinal expansion velocities are slower, the expansion duration is shorter and the system freezes out, showing smaller dimensions and higher temperature.
AB - Two-particle correlation functions of negatively charged hadrons from Pb-Pb collisions at 158 GeV c(-1)/nucleon have been measured by the WA97 experiment at the CERN SPS. A Coulomb correction procedure that assumes an expanding source has been implemented. Within the framework of an expanding thermalized source model the size and dynamical state of the collision fireball at freeze-out have been reconstructed as a function of the centrality of the collision. Less central collisions exhibit a different dynamics than central ones: both transverse and longitudinal expansion velocities are slower, the expansion duration is shorter and the system freezes out, showing smaller dimensions and higher temperature.
UR - http://www.scopus.com/inward/record.url?scp=0001758593&partnerID=8YFLogxK
U2 - 10.1088/0954-3899/27/11/311
DO - 10.1088/0954-3899/27/11/311
M3 - Article
SN - 1361-6471
VL - 27
SP - 2325
EP - 2344
JO - Journal of Physics G: Nuclear and Particle Physics
JF - Journal of Physics G: Nuclear and Particle Physics
ER -