Central Pb+Pb Collisions at 158 A GeV/c Studied by Pion-Pion Interferometry
| dc.creator | WA98 Collaboration | |
| dc.creator | Aggarwal, M. M. | |
| dc.date | 2000-03-08 | |
| dc.date.accessioned | 2026-07-07T12:25:50Z | |
| dc.date.available | 2026-07-07T12:25:50Z | |
| dc.description | Two-particle correlations have been measured for identified negative pions from central 158 AGeV Pb+Pb collisions and fitted radii of about 7 fm in all dimensions have been obtained. A multi-dimensional study of the radii as a function of kT is presented, including a full correction for the resolution effects of the apparatus. The cross term Rout-long of the standard fit in the Longitudinally CoMoving System (LCMS) and the vl parameter of the generalised Yano-Koonin fit are compatible with 0, suggesting that the source undergoes a boost invariant expansion. The shapes of the correlation functions in Qinv and Qspace have been analyzed in detail. They are not Gaussian but better represented by exponentials. As a consequence, fitting Gaussians to these correlation functions may produce different radii depending on the acceptance of the experimental setup used for the measurement. | |
| dc.description | 13 pages including 10 figures | |
| dc.identifier | https://arxiv.org/abs/hep-ex/0003009 | |
| dc.identifier | http://arxiv.org/abs/hep-ex/0003009 | |
| dc.identifier | Eur.Phys.J.C16:445-451,2000 | |
| dc.identifier | doi:10.1007/s100520000413 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/214695 | |
| dc.subject | High Energy Physics - Experiment | |
| dc.title | Central Pb+Pb Collisions at 158 A GeV/c Studied by Pion-Pion Interferometry | |
| dc.type | text |