Differential cross sections for the reaction gamma p -> K-*0 Sigma(+) are presented in the photon energy range of 1.7 to 3.0 GeV. The K-*0 was detected by its decay products, K+pi(-), in the Continuous Electron Beam Accelerator Facility's large acceptance spectrometer (CLAS) detector at the Thomas Jefferson National Accelerator Facility. These data are the first K-*0 photoproduction cross sections ever published over a broad range of angles. Comparison with a theoretical model based on the vector and tensor K-*-quark couplings shows good agreement with the data, except at forward angles, suggesting that the role of scalar kappa meson exchange should be investigated.
CROSS-SECTIONS FOR THE GAMMA P ---> K*0 SIGMA+ REACTION AT E(GAMMA) = 1.7-GEV - 3.0-GEV
RICCO, GIOVANNI;TAIUTI, MAURO GINO;
2007-01-01
Abstract
Differential cross sections for the reaction gamma p -> K-*0 Sigma(+) are presented in the photon energy range of 1.7 to 3.0 GeV. The K-*0 was detected by its decay products, K+pi(-), in the Continuous Electron Beam Accelerator Facility's large acceptance spectrometer (CLAS) detector at the Thomas Jefferson National Accelerator Facility. These data are the first K-*0 photoproduction cross sections ever published over a broad range of angles. Comparison with a theoretical model based on the vector and tensor K-*-quark couplings shows good agreement with the data, except at forward angles, suggesting that the role of scalar kappa meson exchange should be investigated.
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