Naslov
Indications for the onset of deconfinement in nucleus nucleus collisions

Autori
Antičić, Tome ; Kadija, Krešo ; Šuša, Tatjana ; et al. (NA49 Collaboration)

Izvornik
Nucl-ex/0412018

Vrsta, podvrsta
Ostale vrste radova, ostalo

Godina
2004

Ključne riječi
NA49; CERN; SPS; hadron production; transverse mass; deconfinement

Sažetak
The hadronic final state of central Pb+Pb collisions at 20, 30, 40 80 and 158 AGeV has been measured by the CERN NA49 collaboration. The mean transverse mass of pions and kaons at midrapidity stays nearly constant in this energy range, whereas at lower energies, at the AGS, a steep increase with beam energy was measured. Compared to p+p collisions as well as model calculations, anomalies in the energy dependence of pion and kaon production at lower SPS energies are observed. These findings can be explained, assuming that the energy density reached in central A+A collisions at lower SPS energies is sufficient to force the hot and dense nucler matter into a deconfined phase.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

POVEZANOST RADA