Document Type

Article

Article Version

Publisher's PDF

Publication Date

1-1-2007

Abstract

Photoproduction of the cascade resonances has been investigated in the reactions γp→K+K+(X) and γp→K+K+π−(X). The mass splitting of the ground state (Ξ−,Ξ0) doublet is measured to be 5.4±1.8 MeV/c2, consistent with existing measurements. The differential (total) cross sections for the Ξ− have been determined for photon beam energies from 2.75 to 3.85 (4.75) GeV and are consistent with a production mechanism of Y+→K+Ξ− through a t-channel process. The reaction γp→K+K+π−[Ξ0] has also been investigated to search of excited cascade resonances. No significant signal of excited cascade states other than the Ξ−(1530) is observed. The cross-section results of the Ξ−(1530) have also been obtained for photon beam energies from 3.35 to 4.75 GeV.

Comments

Copyright American Physical Society Publisher final version available at http://prc.aps.org/abstract/PRC/v76/i2/e025208

Publication Title

Physical Review C

Published Citation

L. Guo et al., "Cascade production in the reactions γp→K+K+(X) and γp→K+K+π−(X)", Physical Review C 76.2 (2007) DOI: 10.1103/PhysRevC.76.025208

DOI

10.1103/PhysRevC.76.025208

Peer Reviewed

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