Observation of S=+1 narrow resonances in the system $K_s^{0}p$ from p+$C_3{H}_8$ collision at 10 GeV/c

Abstract

The 2m propane bubble chamber experimental data have been analyzed to search for an exotic baryon state, the ${\Theta }^{+}$ -baryon, in the $p{K}_s^0$ decay mode for the reaction p+$C_3{H}_8$ at 10 GeV/c. The $p{K}_s^0$ invariant mass spectrum shows resonant structures with $M_{K_s^{0}p}$=1540$\pm$8, 1613$\pm$10, 1821$\pm$11 MeV/$c^2$ and ${\Gamma }_{K_s^{0}p}$= 9.2$\pm$1.8, 16.1$\pm$4.1, 28.0$\pm$9.4 MeV/$c^2$. The maximal statistical significance of these peaks have been estimated as 5.5$\sigma$,4.8$\sigma$ and 5.0$\sigma$, respectively.

4 pages, 4 figures

References in corpus (1)

• A Diquark-Triquark Model for the KN Pentaquark

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