CLAS Physics Database

Measurement E17M17

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Experiment: E89-004 Photoproduction of Hyperons, 2005

Spokespersons: R. A. Schumacher

Experiment comment: The given error bars are statistical. The overall systematic uncertainty in these results was estimated to be +-8.0% for most bins. In the forward-most angle bin the uncertainty is +-11%. All known corrections were applied to the yield extraction, normalization, and acceptance calculations. No renormalization to any other cross sections was made; the measurement was absolute. The data are the thesis work of Robert Bradford (May, 2005), and this thesis is available on the CLAS web site. An alternate source of this data is to email schumacher@cmu.edu for a compact text file with all the information. Correlated data on W & cos(theta) distribution are available in E17M74 measurement.

Publications:

• R. Bradford, R. A. Schumacher, J. W. C. McNabb, L. Todor & CLAS Collaboration Differentail Cross Sections fro gamma p --> K+ Y for Lambda and Sigma0 Hyperons // Physical Review C 73, 035202 (2006)
• J. W. C. McNabb, R. A. Schumacher, L .Todor & CLAS Collaboration Hyperon Photoproduction in the Nucleon Resonance Region // Physical Review C 69, 042201 (2004)

Quantity measured: dσ/dcos(θ_K⁺), mcbn
Differential cross section, where cos(θ_K⁺) is cosine of the K⁺ meson azimuthal angle in CMS.
Beam: γ, polarization: circular
Target: p (Z=1, A=1), polarization: none
Final state: K⁺ Σ⁰, polarization: polarized

Observable quantity measured (Y axis): dσ/dcos(θK+), mcbn Parameter (X axis): cos(θK+), dimensionless

Click here to get data in text file, delimited with tabs.

Measured data: