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E89-004 Photoproduction of Hyperons

Spokesperson
R. A. Schumacher
Year
2005
Abstract
CLAS data for real photoproduction of \Lambda and \Sigma^0 hyperons off the proton. The reactions are gamma + p --> K^++ \Lambda and gamma + p --> K^+ + \Sigma^0. Data cover the energy region from threshold to W=2.53 GeV. Angles cover -0.8 < cos(thetaK^+) < +0.9 is steps of 0.1. The original designation of this experiment was E89-004.
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
  1. 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)
  2. J. W. C. McNabb, R. A. Schumacher, L .Todor & CLAS Collaboration Hyperon Photoproduction in the Nucleon Resonance Region // Physical Review C 69, 042201 (2004)
Quantities
dσ/dcos(θK+)

Measurements

ID Quantity Beam Target Final state Q2min,
GeV2 		Q2max,
GeV2 		Wmin,
GeV 		Wmax,
GeV
E17M1 dσ/dcos(θK+) γ p K+ Σ0 0.0 0.0 1.713 1.713
E17M2 dσ/dcos(θK+) γ p K+ Σ0 0.0 0.0 1.727 1.727
E17M3 dσ/dcos(θK+) γ p K+ Σ0 0.0 0.0 1.74 1.74
E17M4 dσ/dcos(θK+) γ p K+ Σ0 0.0 0.0 1.753 1.753
E17M5 dσ/dcos(θK+) γ p K+ Σ0 0.0 0.0 1.767 1.767
E17M6 dσ/dcos(θK+) γ p K+ Σ0 0.0 0.0 1.78 1.78
E17M7 dσ/dcos(θK+) γ p K+ Σ0 0.0 0.0 1.793 1.793
E17M8 dσ/dcos(θK+) γ p K+ Σ0 0.0 0.0 1.806 1.806
E17M9 dσ/dcos(θK+) γ p K+ Σ0 0.0 0.0 1.819 1.819
E17M10 dσ/dcos(θK+) γ p K+ Σ0 0.0 0.0 1.832 1.832
E17M11 dσ/dcos(θK+) γ p K+ Σ0 0.0 0.0 1.845 1.845
E17M12 dσ/dcos(θK+) γ p K+ Σ0 0.0 0.0 1.858 1.858
E17M13 dσ/dcos(θK+) γ p K+ Σ0 0.0 0.0 1.87 1.87
E17M14 dσ/dcos(θK+) γ p K+ Σ0 0.0 0.0 1.883 1.883
E17M15 dσ/dcos(θK+) γ p K+ Σ0 0.0 0.0 1.896 1.896
E17M16 dσ/dcos(θK+) γ p K+ Σ0 0.0 0.0 1.908 1.908
E17M17 dσ/dcos(θK+) γ p K+ Σ0 0.0 0.0 1.92 1.92
E17M18 dσ/dcos(θK+) γ p K+ Σ0 0.0 0.0 1.933 1.933
E17M19 dσ/dcos(θK+) γ p K+ Σ0 0.0 0.0 1.945 1.945
E17M20 dσ/dcos(θK+) γ p K+ Σ0 0.0 0.0 1.957 1.957
E17M21 dσ/dcos(θK+) γ p K+ Σ0 0.0 0.0 1.969 1.969
E17M22 dσ/dcos(θK+) γ p K+ Σ0 0.0 0.0 1.981 1.981
E17M23 dσ/dcos(θK+) γ p K+ Σ0 0.0 0.0 1.993 1.993
E17M24 dσ/dcos(θK+) γ p K+ Σ0 0.0 0.0 2.005 2.005
E17M25 dσ/dcos(θK+) γ p K+ Σ0 0.0 0.0 2.016 2.016
E17M26 dσ/dcos(θK+) γ p K+ Σ0 0.0 0.0 2.028 2.028
E17M27 dσ/dcos(θK+) γ p K+ Σ0 0.0 0.0 2.04 2.04
E17M28 dσ/dcos(θK+) γ p K+ Σ0 0.0 0.0 2.052 2.052
E17M29 dσ/dcos(θK+) γ p K+ Σ0 0.0 0.0 2.063 2.063
E17M30 dσ/dcos(θK+) γ p K+ Σ0 0.0 0.0 2.075 2.075
E17M31 dσ/dcos(θK+) γ p K+ Σ0 0.0 0.0 2.086 2.086
E17M32 dσ/dcos(θK+) γ p K+ Σ0 0.0 0.0 2.097 2.097
E17M33 dσ/dcos(θK+) γ p K+ Σ0 0.0 0.0 2.108 2.108
E17M34 dσ/dcos(θK+) γ p K+ Σ0 0.0 0.0 2.12 2.12
E17M35 dσ/dcos(θK+) γ p K+ Σ0 0.0 0.0 2.131 2.131
E17M36 dσ/dcos(θK+) γ p K+ Σ0 0.0 0.0 2.142 2.142
E17M37 dσ/dcos(θK+) γ p K+ Σ0 0.0 0.0 2.153 2.153
E17M38 dσ/dcos(θK+) γ p K+ Σ0 0.0 0.0 2.164 2.164
E17M39 dσ/dcos(θK+) γ p K+ Σ0 0.0 0.0 2.175 2.175
E17M40 dσ/dcos(θK+) γ p K+ Σ0 0.0 0.0 2.185 2.185
E17M41 dσ/dcos(θK+) γ p K+ Σ0 0.0 0.0 2.196 2.196
E17M42 dσ/dcos(θK+) γ p K+ Σ0 0.0 0.0 2.207 2.207
E17M43 dσ/dcos(θK+) γ p K+ Σ0 0.0 0.0 2.217 2.217
E17M44 dσ/dcos(θK+) γ p K+ Σ0 0.0 0.0 2.228 2.228
E17M45 dσ/dcos(θK+) γ p K+ Σ0 0.0 0.0 2.239 2.239
E17M46 dσ/dcos(θK+) γ p K+ Σ0 0.0 0.0 2.249 2.249
E17M47 dσ/dcos(θK+) γ p K+ Σ0 0.0 0.0 2.26 2.26
E17M48 dσ/dcos(θK+) γ p K+ Σ0 0.0 0.0 2.27 2.27
E17M49 dσ/dcos(θK+) γ p K+ Σ0 0.0 0.0 2.281 2.281
E17M50 dσ/dcos(θK+) γ p K+ Σ0 0.0 0.0 2.291 2.291
E17M51 dσ/dcos(θK+) γ p K+ Σ0 0.0 0.0 2.301 2.301
E17M52 dσ/dcos(θK+) γ p K+ Σ0 0.0 0.0 2.332 2.332
E17M53 dσ/dcos(θK+) γ p K+ Σ0 0.0 0.0 2.343 2.343
E17M54 dσ/dcos(θK+) γ p K+ Σ0 0.0 0.0 2.353 2.353
E17M55 dσ/dcos(θK+) γ p K+ Σ0 0.0 0.0 2.363 2.363
E17M56 dσ/dcos(θK+) γ p K+ Σ0 0.0 0.0 2.372 2.372
E17M57 dσ/dcos(θK+) γ p K+ Σ0 0.0 0.0 2.382 2.382
E17M58 dσ/dcos(θK+) γ p K+ Σ0 0.0 0.0 2.392 2.392
E17M59 dσ/dcos(θK+) γ p K+ Σ0 0.0 0.0 2.402 2.402
E17M60 dσ/dcos(θK+) γ p K+ Σ0 0.0 0.0 2.411 2.411
E17M61 dσ/dcos(θK+) γ p K+ Σ0 0.0 0.0 2.421 2.421
E17M62 dσ/dcos(θK+) γ p K+ Σ0 0.0 0.0 2.431 2.431
E17M63 dσ/dcos(θK+) γ p K+ Σ0 0.0 0.0 2.44 2.44
E17M64 dσ/dcos(θK+) γ p K+ Σ0 0.0 0.0 2.45 2.45
E17M65 dσ/dcos(θK+) γ p K+ Σ0 0.0 0.0 2.459 2.459
E17M66 dσ/dcos(θK+) γ p K+ Σ0 0.0 0.0 2.469 2.469
E17M67 dσ/dcos(θK+) γ p K+ Σ0 0.0 0.0 2.478 2.478
E17M68 dσ/dcos(θK+) γ p K+ Σ0 0.0 0.0 2.487 2.487
E17M69 dσ/dcos(θK+) γ p K+ Σ0 0.0 0.0 2.496 2.496
E17M70 dσ/dcos(θK+) γ p K+ Σ0 0.0 0.0 2.506 2.506
E17M71 dσ/dcos(θK+) γ p K+ Σ0 0.0 0.0 2.515 2.515
E17M72 dσ/dcos(θK+) γ p K+ Σ0 0.0 0.0 2.524 2.524
E17M73 dσ/dcos(θK+) γ p K+ Σ0 0.0 0.0 2.533 2.533
E17M74 dσ/dcos(θK+) γ p K+ Σ0 0.0 0.0 1.713 2.533
Created in SINP MSU, CLAS Collaboration