Measurement of polarisation observables in $K_s^0{\Sigma }^{+}$ photoproduction off the proton

Abstract

The reaction $\gamma p\to K_S^0{\Sigma }^{+}$ is studied in the photon energy range from threshold. Linearly polarised photon beams from coherent bremsstrahlung enabled the first measurement of photon beam asymmetries in this reaction up to $E_{\gamma }=2250$ MeV. In addition, the recoil hyperon polarisation was determined through the asymmetry in the weak decay ${\Sigma }^{+}\to p{\pi }^0$ up to $E_{\gamma }=1650$ MeV. The data are compared to partial wave analyses, and the possible impact on the interpretation of a recently observed cusp-like structure near the $K^{\ast }$ thresholds is discussed.

6 pages, 5 figures. References [8,9,10,11] which were not on the original submission are now included

References in corpus (12)

• K^- p scattering length from scattering experiments
• Chiral dynamics of the S11(1535) and S11(1650) resonances revisited
• Restoration of chiral and $U(1{)}_A$ symmetries in excited hadrons
• Measurement of the beam asymmetry in eta-photoproduction off the proton
• Measurement of the reaction gamma p --> K0 Sigma+ at photon energies up to 2.6 GeV
• A gauge invariant chiral unitary framework for kaon photo- and electroproduction on the proton
• Nucleon resonance decay by the $K^0{\Sigma }^{+}$ channel
• Linearly polarised photon beams at ELSA and measurement of the beam asymmetry in pi^0-photoproduction off the proton
• An explanation of the ${\Delta }_{5/2^{-}}(1930)$ as a $\rho \Delta$ bound state
• P-wave excited baryons from pion- and photo-induced hyperon production
• Beam asymmetry in near threshold omega photoproduction off the proton
• Transverse Polarization of ${\Sigma }^{+}(1189)$ in Photoproduction on a Hydrogen Target in CLAS

Cited by in corpus (2)

• Light Baryon Spectroscopy
• Observation of a cusp-like structure in the $\gamma p\to K^{+}{\Sigma }^0$ cross section at forward angles and low momentum transfer