Source radii at target rapidity from two-proton and two-deuteron correlations in central Pb+Pb collisions at 158 A GeV
| dc.creator | WA98 Collaboration | |
| dc.creator | Aggarwal, M. M. | |
| dc.date | 2007-09-16 | |
| dc.date.accessioned | 2026-07-07T08:29:54Z | |
| dc.date.available | 2026-07-07T08:29:54Z | |
| dc.description | Two-proton and two-deuteron correlations have been studied in the target fragmentation region of central Pb+Pb collisions at 158 A GeV. Protons and deuterons were measured with the Plastic Ball spectrometer of the WA98 experiment at the CERN SPS. The results of one-dimensional and multi-dimensional analyses using both the Bertsch-Pratt and Yano-Koonin-Podgoretsky parameterizations of the two-particle correlation functions are presented. The proton source exhibits a volume emission, while the deuteron source, with small outward radius, appears opaque. Both proton and deuteron sources have cross-terms R_{ol}^2 and longitudinal velocities beta consistent with zero, indicating a boost-invariant expansion. The invariant radius parameter R follows an approximate A/sqrt{m} scaling while the longitudinal and transverse radii, R_{L} and R_{T}, scale approximately as A/sqrt{m_{T}} with A ~ 3 fm GeV^{1/2} in both cases. | |
| dc.description | 13 pages, 15 figures | |
| dc.identifier | https://arxiv.org/abs/0709.2477 | |
| dc.identifier | http://arxiv.org/abs/0709.2477 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/138105 | |
| dc.subject | Nuclear Experiment | |
| dc.title | Source radii at target rapidity from two-proton and two-deuteron correlations in central Pb+Pb collisions at 158 A GeV | |
| dc.type | text |