Physics – High Energy Physics – High Energy Physics - Experiment
Scientific paper
2009-04-17
Eur.Phys.J.C65:9-63,2010
Physics
High Energy Physics
High Energy Physics - Experiment
69 pages, 72 figures
Scientific paper
10.1140/epjc/s10052-009-1172-2
New data on the production of protons, anti-protons and neutrons in p+p interactions are presented. The data come from a sample of 4.8 million inelastic events obtained with the NA49 detector at the CERN SPS at 158 GeV/c beam momentum. The charged baryons are identified by energy loss measurement in a large TPC tracking system. Neutrons are detected in a forward hadronic calorimeter. Inclusive invariant cross sections are obtained in intervals from 0 to 1.9 GeV/c (0 to 1.5 GeV/c) in transverse momentum and from -0.05 to 0.95 (-0.05 to 0.4) in Feynman x for protons (anti-protons), respectively. pT integrated neutron cross sections are given in the interval from 0.1 to 0.9 in Feynman x. The data are compared to a wide sample of existing results in the SPS and ISR energy ranges as well as to proton and neutron measurements from HERA and RHIC.
Antičić Tome
Baatar B.
Bartke J.
Betev Latchezar
Białkowska H.
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