Measurements of inclusive spectra and mean multiplicities of π ± , K ± , p andp produced in inelastic p + p interactions at incident projectile momenta of 20,31,40, 80 and 158 GeV/c ( √ s = 6.3, 7.7, 8.8, 12.3 and 17.3 GeV, respectively) were performed at the CERN Super Proton Synchrotron using the large acceptance NA61/SHINE hadron spectrometer. Spectra are presented as function of rapidity and transverse momentum and are compared to predictions of current models. The measurements serve as the baseline in the NA61/SHINE study of the properties of the onset of deconfinement and search for the critical point of strongly interacting matter.
The measurement of K * (892) 0 resonance production via its K + π − decay mode in inelastic p+p collisions at beam momentum 158 GeV/c (√ s N N = 17.3 GeV) is presented. The data were recorded by the NA61/SHINE hadron spectrometer at the CERN Super Proton Synchrotron. The template method was used to extract the K * (892) 0 signal and double-differential transverse momentum and rapidity spectra were obtained. The full phase-space mean multiplicity of K * (892) 0 mesons was found to be (78.44 ± 0.38(stat) ± 6.0(sys)) • 10 −3. The NA61/SHINE results are compared with the Epos1.99 and Hadron Resonance Gas models as well as with world data from p+p and nucleus-nucleus collisions.
Inclusive production of -hyperons was measured with the large acceptance NA61/SHINE spectrometer at the CERN SPS in inelastic p+p interactions at beam momentum of 158 GeV/c. Spectra of transverse momentum and transverse mass as well as distributions of rapidity and x F are presented. The mean multiplicity was estimated to be 0.120 ± 0.006 (stat.) ±0.010 (sys.). The results are compared with previous measurements and predictions of the Epos, Urqmd and Fritiof models.
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