부산대학교 도서관

Measurements of K ∗ (892) 0 resonance production via its K + π - decay mode in inelastic p+p collisions at beam momenta 40 and 80 GeV / c ( s NN = 8.8 and 12.3 GeV ) are 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. Transverse momentum and rapidity spectra were obtained. The mean multiplicities of K ∗ (892) 0 mesons were found to be (35.1 ± 1.3 (stat) ± 3.6 (sys)) · 10 - 3 at 40 GeV / c and (58.3 ± 1.9 (stat) ± 4.9 (sys)) · 10 - 3 at 80 GeV / c . The NA61/SHINE results are compared with the Epos1.99 and Hadron Resonance Gas models as well as with world data. The transverse mass spectra of K ∗ (892) 0 mesons and other particles previously reported by NA61/SHINE were fitted within the Blast-Wave model. The transverse flow velocities are close to 0.1–0.2 of the speed of light and are significantly smaller than the ones determined in heavy nucleus-nucleus interactions at the same beam momenta. [ABSTRACT FROM AUTHOR]