Baryon stopping and charged particle distributions in central Pb+Ph collisions at 158 GeV per nucleon

Citation
H. Appelshauser et al., Baryon stopping and charged particle distributions in central Pb+Ph collisions at 158 GeV per nucleon, PHYS REV L, 82(12), 1999, pp. 2471-2475
Citations number
35
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW LETTERS
ISSN journal
0031-9007 → ACNP
Volume
82
Issue
12
Year of publication
1999
Pages
2471 - 2475
Database
ISI
SICI code
0031-9007(19990322)82:12<2471:BSACPD>2.0.ZU;2-5
Abstract
Net proton and negative hadron spectra for central Pb + Pb collisions at 15 8 GeV per nucleon at the CERN Super Proton Synchrotron were measured and co mpared to spectra from lighter systems. Net baryon distributions were deriv ed from those of net protons. Stopping (rapidity shift with respect to the beam) and mean transverse momentum [p(T)] of net baryons increase with syst em size. The rapidity density of negative hadrons scales with the number of participant nucleons for nuclear collisions, whereas their [p(T)] is indep endent of system size. The [p(T)] dependence upon particle mass and system size is consistent with larger transverse flow velocity at midrapidity for Pb + Pb compared to S + S central collisions.