Xi and Xi-bar Production in 158 GeV/Nucleon Pb+Pb Collisions
| dc.creator | The NA49 Collaboration | |
| dc.creator | al, H. Appelshauser et | |
| dc.date | 1998-10-07 | |
| dc.date | 1998-10-28 | |
| dc.date.accessioned | 2026-07-07T12:04:06Z | |
| dc.date.available | 2026-07-07T12:04:06Z | |
| dc.description | We report measurements of Xi and Xi-bar hyperon absolute yields as a function of rapidity in 158 GeV/c Pb+Pb collisions. At midrapidity, dN/dy = 2.29 +/- 0.12 for Xi, and 0.52 +/- 0.05 for Xi-bar, leading to the ratio of Xi-bar/Xi = 0.23 +/- 0.03. Inverse slope parameters fitted to the measured transverse mass spectra are of the order of 300 MeV near mid-rapidity. The estimated total yield of Xi particles in Pb+Pb central interactions amounts to 7.4 +/- 1.0 per collision. Comparison to Xi production in properly scaled p+p reactions at the same energy reveals a dramatic enhancement (about one order of magnitude) of Xi production in Pb+Pb central collisions over elementary hadron interactions. | |
| dc.description | 15 pages | |
| dc.identifier | https://arxiv.org/abs/nucl-ex/9810005 | |
| dc.identifier | http://arxiv.org/abs/nucl-ex/9810005 | |
| dc.identifier | Phys.Lett.B444:523-530,1998 | |
| dc.identifier | doi:10.1016/S0370-2693(98)01399-9 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/208021 | |
| dc.subject | Nuclear Experiment | |
| dc.subject | High Energy Physics - Experiment | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Xi and Xi-bar Production in 158 GeV/Nucleon Pb+Pb Collisions | |
| dc.type | text |