Physical Review C
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.
Original Publication Citation
Amaryan, M. J., Bültmann, S. Dodge, G.E., Hyde-Wright, C.E., Kuhn, S.E., CLAS Collaboration (2007) Cascade Production in the Reactions 𝛾p → K⁺ K⁺(X) and 𝛾p → K⁺K⁺ π⁻⁻(X) Physical Review C, 76(2), 1-11, Article 025208. https://doi.org/10.1103/PhysRevC.76.025208
0000-0001-7282-8120 (Hyde), 0000-0003-2243-6836 (Kuhn)
Amaryan, M. J.; Bagdasaryan, H.; Bültmann, S.; Careccia, S. L.; Dharmawardane, K. V.; Dodge, G. E.; Gavalian, G.; Guler, N.; Hyde-Wright, C. E.; Kalantarians, N.; Klein, A.; Kuhn, S. E.; Niroula, M. R.; Tkachenko, S.; Weinstein, L. B.; Zhang, J.; et al.; and CLAS Collaboration, "Cascade Production in the Reactions 𝛾p → K⁺ K⁺(X) and 𝛾p → K⁺K⁺ π⁻⁻(X)" (2007). Physics Faculty Publications. 463.