Cascade production in the reactions {gamma}p{yields}K{sup +}K{sup +}(X) and {gamma}p{yields}K{sup +}K{sup +}{pi}{sup -}(X)

Photoproduction of the cascade resonances has been investigated in the reactions {gamma}p{yields}K{sup +}K{sup +}(X) and {gamma}p{yields}K{sup +}K{sup +}{pi}{sup -}(X). The mass splitting of the ground state ({xi}{sup -},{xi}{sup 0}) doublet is measured to be 5.4{+-}1.8 MeV/c{sup 2}, consistent with existing measurements. The differential (total) cross sections for the {xi}{sup -} 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*{yields}K{sup +}{xi}{sup -} through a t-channel process. The reaction {gamma}p{yields}K{sup +}K{sup +}{pi}{sup -}[{xi}{sup 0}] has also been investigated to search of excited cascade resonances. No significant signal of excited cascade states other than the {xi}{sup -}(1530) is observed. The cross-section results of the {xi}{sup -}(1530) have also been obtained for photon beam energies from 3.35 to 4.75 GeV.