$K^{+}\Lambda$ and $K^{+}{\Sigma }^0$ photoproduction with fine center-of-mass energy resolution

Abstract

Measurements of $\gamma p\to K^{+}\Lambda$ and $\gamma p\to K^{+}{\Sigma }^0$ cross-sections have been obtained with the photon tagging facility and the Crystal Ball calorimeter at MAMI-C. The measurement uses a novel $K^{+}$ meson identification technique in which the weak decay products are characterized using the energy and timing characteristics of the energy deposit in the calorimeter, a method that has the potential to be applied at many other facilities. The fine center-of-mass energy ($W$) resolution and statistical accuracy of the new data results in a significant impact on partial wave analyses aiming to better establish the excitation spectrum of the nucleon. The new analyses disfavor a strong role for quark-diquark dynamics in the nucleon.

7 pages, 8 figures

References in corpus (7)

• Upgrade of the Glasgow photon tagging spectrometer for Mainz MAMI-C
• Study of the gp-->etap reaction with the Crystal Ball detector at the Mainz Microtron(MAMI-C)
• eta-photoproduction in the resonance energy region
• Solution to Faddeev equations with two-body experimental amplitudes as input and application to J^P=1/2^+, S=0 baryon resonances
• Origin of the second peak in the cross section of the $K^{+}\Lambda$ photoproduction
• Evidence for the J^p=1/2^+ narrow state at 1650 MeV in the photoproduction of KLambda
• Constraining the mass and width of the $N^{\ast }(1685)$ resonance

Cited by in corpus (20)

• Light Baryon Spectroscopy
• Photoproduction Reactions and Non-Strange Baryon Spectroscopy
• The impact of ${\mathbf{K}}^{+}\mathbf{\Lambda }$ photoproduction on the resonance spectrum
• Light baryon resonances from a coupled-channel study including $\mathbf{K\Sigma }$ photoproduction
• Photo- and electroproduction of $K^{+}\Lambda$ with unitarity-restored isobar model
• The BGOOD experimental setup at ELSA
• The polarization observables T, P, and H and their impact on $\gamma p\to p{\pi }^0$ multipoles
• Electromagnetic production of $K\Sigma$ on the nucleon near threshold
• Energy-independent PWA of the reaction $\gamma p\to K^{+}\Lambda$
• $K^{+}\Lambda$ photoproduction at forward angles and low momentum transfer
• Photoproduction of $\Lambda$ and ${\Sigma }^0$ hyperons off protons with linearly polarized photons at $E_{\gamma }=1.5-3.0$ GeV
• 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
• Sign ambiguity in the K Sigma channel
• Extracting the pole and Breit-Wigner properties of nucleon and $\Delta$ resonances from the $\gamma N\to K\Sigma$ photoproduction
• Partial-Wave Analysis of $\gamma p\to K^{+}\Lambda$ using a multichannel framework
• Beam-Recoil Transferred Polarization in $K^{+}Y$ Electroproduction in the Nucleon Resonance Region with CLAS12
• Photoproduction of $K^{+}{K}^{-}$ meson pairs on the proton
• Photon induced K$\Lambda$ production on the proton in the low energy region
• Strangeness Photoproduction on Quasifree Neutrons
• Exotics and PWA for piN Scattering