Cross Sections for the $\gamma p\to K^{\ast 0}{\Sigma }^{+}$ Reaction at $E_{\gamma }=1.7-3.0$ GeV

Abstract

Differential cross sections for the reaction $\gamma p\to K^{\ast 0}{\Sigma }^{+}$ are presented at nine bins in photon energy in the range from 1.7 to 3.0 GeV. The \kstar was detected by its decay products, $K^{+}{\pi }^{-}$, in the CLAS detector at Jefferson Lab. These data are the first \kstar photoproduction cross sections ever published over a broad range of angles. Comparison with a theoretical model based on the vector and tensor $K^{\ast }$-quark couplings shows good agreement with the data in general, after adjusting the model's two parameters in a fit to our data. Disagreement between the data at forward angles and the global angle-energy fit to the model suggests that the role of scalar $\kappa$ meson exchange in $t$-channel diagrams should be investigated.

arXiv comment7 pages, 5 figures, submitted to Phys. Rev. C (Rapid Commun.)

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• Contribution of higher nucleon resonances to K*Λ photoproduction
• Strong decays of the newly observed $D(2550)$, $D(2600)$, $D(2750)$, and $D(2760)$
• Near-threshold Lambda(1520) production by the gamma p -> K+Lambda(1520) reaction at forward K+ angles
• K^0 pi^0 Sigma^+ and K^*0 Sigma^+ photoproduction off the proton
• Pion- and photo-induced transition amplitudes to $\Lambda K$, $\Sigma K$, and $N\eta$
• Possible $\Sigma ({\frac{1}{2}}^{-})$ under the ${\Sigma }^{\ast }(1385)$ peak in $K{\Sigma }^{\ast }$ photoproduction
• Effects of $\Delta (1905)5/2^{+}$ on $K^{\ast }\Sigma$ photoproduction
• Charged K* Photoproduction in a Regge model
• The $K^{-}p\to {\Sigma }^0{\pi }^0$ reaction at low energies in a chiral quark model
• Cross sections for the $\gamma p\to K^{\ast +}\Lambda$ and $\gamma p\to K^{\ast +}{\Sigma }^0$ reactions measured at CLAS
• K*Sigma photoproduction off the proton target with baryon resonances
• Hyperon Photo and Electro Production at CLAS
• Decay behavior of hidden-strange hadronic molecular state $N(2270)$
• The N* Physics Program at Jefferson Lab
• Combined analysis of the data on cross sections and spin density matrix elements for $K^{\ast }\Sigma$ photoproduction reactions
• Strangeness Physics with CLAS at JLab
• Contribution of N* and Delta* resonances in K* Sigma(1190) photoproduction