Indications of suppressed high p_T hadron production in nucleus-nucleus collisions at CERN-SPS
| dc.creator | d'Enterria, David | |
| dc.date | 2004-03-27 | |
| dc.date | 2004-05-27 | |
| dc.date.accessioned | 2026-07-07T11:32:30Z | |
| dc.date.available | 2026-07-07T11:32:30Z | |
| dc.description | Inclusive pion production at high transverse momenta (p_T > 2 GeV/c) in nucleus-nucleus (A+A) collisions at CERN SPS (sqrt(s_NN)~20 GeV) is revisited and systematically compared to all existing proton-proton data in the same range of center-of-mass energies. The ratio of A+A to p+p pion cross-sections (nuclear modification factor) for 0-8% central Pb+Pb, Pb+Au and S+Au reactions does not show a strong enhancement as a function of p_T as previously found, but is consistent with scaling with the number of nucleon-nucleon (NN) collisions. Neutral pion yields per NN collision in head-on Pb+Pb reactions are suppressed, whereas peripheral yields are enhanced. These results together indicate that some amount of ``jet quenching'' may already be present in central heavy-ion reactions at sqrt(s_NN)~20 GeV. | |
| dc.description | Updated versions of Figs. 1,2 and 4. Minor text modifications | |
| dc.identifier | https://arxiv.org/abs/nucl-ex/0403055 | |
| dc.identifier | http://arxiv.org/abs/nucl-ex/0403055 | |
| dc.identifier | Phys.Lett.B596:32-43,2004 | |
| dc.identifier | doi:10.1016/j.physletb.2004.06.071 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/197616 | |
| dc.subject | Nuclear Experiment | |
| dc.subject | High Energy Physics - Experiment | |
| dc.title | Indications of suppressed high p_T hadron production in nucleus-nucleus collisions at CERN-SPS | |
| dc.type | text |