Threshold kaon photo- and electroproduction in SU(3) baryon chiral perturbation theory

Abstract

We calculate the processes $\gamma p\to K^0{\Sigma }^{+},K^{+}{\Sigma }^0,K^{+}\Lambda$ in three flavor heavy baryon chiral perturbation theory to one loop. Some low--energy constants are fixed from single baryon properties while others are estimated by means of resonance saturation. The total cross sections are comparable with the few existing data points in the threshold region. The angular dependences of the recoil polarization of the $\Lambda$ and ${\Sigma }^0$ show most features of the ones measured at ELSA. We also predict the isovector charge radius of the ${\Sigma }^{+}$, $<r_V^2{>}_{{\Sigma }^{+}}=(0.30\pm 0.03)f{m}^2$.

9 pp, LaTeX, 3 figs, uses epsf

References in corpus (5)

• Dispersion-Theoretical Analysis of the Nucleon Electromagnetic Formfactors
• Updated resonance photo-decay amplitudes to 2 GeV
• Constraints on Coupling Constants through Charged $\Sigma$ Photoproduction
• Chiral symmetry and the reaction $\gamma p\to {\pi }^{0}p$
• Double neutral pion photoproduction at threshold

Cited by in corpus (20)

• Decays of Baryon Resonances into K Lambda, K^+ Sigma^0 and K^0 Sigma^+
• Close-to-threshold Meson Production in Hadronic Interactions
• Off-shell effects in the electromagnetic production of strangeness
• Meson-Baryon Effective Chiral Lagrangians to O(q^3)
• The impact of ${\mathbf{K}}^{+}\mathbf{\Lambda }$ photoproduction on the resonance spectrum
• Photoproduction of $K\Lambda$ on the proton
• Electromagnetic production of kaon near threshold
• Light baryon resonances from a coupled-channel study including $\mathbf{K\Sigma }$ photoproduction
• Electromagnetic production of $K\Sigma$ on the nucleon near threshold
• Coupled $K^{+}\Lambda$ and $K^0\Lambda$ photoproduction off the nucleon: Consequences from the recent CLAS and MAMI data and the $N(1680)P_{11}$ narrow state
• K0-Sigma+ Photoproduction with SAPHIR
• Renormalization of the three flavor Lagrangian in heavy baryon chiral perturbation theory
• Photon induced K$\Lambda$ production on the proton in the low energy region
• Eta and kaon production in a chiral quark model
• Strangeness Electromagnetic Production on Nucleons and Nuclei
• Charged lepton induced one kaon production off the nucleon
• Photo- and Electroproduction of Kaons
• Strangeness Photoproduction on Quasifree Neutrons
• Status of three flavor baryon chiral perturbation theory
• Photoproduction $\gamma p\to K^{+}\Lambda (1690)$ in an effective Lagrangian approach