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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 E16M80 measurement.
Publications
  1. R. Bradford, R. A. Schumacher, J. W. C. McNabb, L. Todor & CLAS Collab. Differentual 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
E16M1 dσ/dcos(θK+) γ p K+ Λ 0.0 0.0 1.628 1.628
E16M2 dσ/dcos(θK+) γ p K+ Λ 0.0 0.0 1.643 1.643
E16M3 dσ/dcos(θK+) γ p K+ Λ 0.0 0.0 1.657 1.657
E16M4 dσ/dcos(θK+) γ p K+ Λ 0.0 0.0 1.671 1.671
E16M5 dσ/dcos(θK+) γ p K+ Λ 0.0 0.0 1.685 1.685
E16M6 dσ/dcos(θK+) γ p K+ Λ 0.0 0.0 1.699 1.699
E16M7 dσ/dcos(θK+) γ p K+ Λ 0.0 0.0 1.713 1.713
E16M8 dσ/dcos(θK+) γ p K+ Λ 0.0 0.0 1.727 1.727
E16M9 dσ/dcos(θK+) γ p K+ Λ 0.0 0.0 1.74 1.74
E16M10 dσ/dcos(θK+) γ p K+ Λ 0.0 0.0 1.753 1.753
E16M11 dσ/dcos(θK+) γ p K+ Λ 0.0 0.0 1.767 1.767
E16M12 dσ/dcos(θK+) γ p K+ Λ 0.0 0.0 1.78 1.78
E16M13 dσ/dcos(θK+) γ p K+ Λ 0.0 0.0 1.793 1.793
E16M14 dσ/dcos(θK+) γ p K+ Λ 0.0 0.0 1.806 1.806
E16M15 dσ/dcos(θK+) γ p K+ Λ 0.0 0.0 1.819 1.819
E16M16 dσ/dcos(θK+) γ p K+ Λ 0.0 0.0 1.832 1.832
E16M17 dσ/dcos(θK+) γ p K+ Λ 0.0 0.0 1.845 1.845
E16M18 dσ/dcos(θK+) γ p K+ Λ 0.0 0.0 1.858 1.858
E16M19 dσ/dcos(θK+) γ p K+ Λ 0.0 0.0 1.87 1.87
E16M20 dσ/dcos(θK+) γ p K+ Λ 0.0 0.0 1.883 1.883
E16M21 dσ/dcos(θK+) γ p K+ Λ 0.0 0.0 1.896 1.896
E16M22 dσ/dcos(θK+) γ p K+ Λ 0.0 0.0 1.908 1.908
E16M23 dσ/dcos(θK+) γ p K+ Λ 0.0 0.0 1.92 1.92
E16M24 dσ/dcos(θK+) γ p K+ Λ 0.0 0.0 1.933 1.933
E16M25 dσ/dcos(θK+) γ p K+ Λ 0.0 0.0 1.945 1.945
E16M26 dσ/dcos(θK+) γ p K+ Λ 0.0 0.0 1.957 1.957
E16M27 dσ/dcos(θK+) γ p K+ Λ 0.0 0.0 1.969 1.969
E16M28 dσ/dcos(θK+) γ p K+ Λ 0.0 0.0 1.981 1.981
E16M29 dσ/dcos(θK+) γ p K+ Λ 0.0 0.0 1.993 1.993
E16M30 dσ/dcos(θK+) γ p K+ Λ 0.0 0.0 2.005 2.005
E16M31 dσ/dcos(θK+) γ p K+ Λ 0.0 0.0 2.016 2.016
E16M32 dσ/dcos(θK+) γ p K+ Λ 0.0 0.0 2.028 2.028
E16M33 dσ/dcos(θK+) γ p K+ Λ 0.0 0.0 2.04 2.04
E16M34 dσ/dcos(θK+) γ p K+ Λ 0.0 0.0 2.052 2.052
E16M35 dσ/dcos(θK+) γ p K+ Λ 0.0 0.0 2.063 2.063
E16M36 dσ/dcos(θK+) γ p K+ Λ 0.0 0.0 2.075 2.075
E16M37 dσ/dcos(θK+) γ p K+ Λ 0.0 0.0 2.086 2.086
E16M38 dσ/dcos(θK+) γ p K+ Λ 0.0 0.0 2.097 2.097
E16M39 dσ/dcos(θK+) γ p K+ Λ 0.0 0.0 2.108 2.108
E16M40 dσ/dcos(θK+) γ p K+ Λ 0.0 0.0 2.12 2.12
E16M41 dσ/dcos(θK+) γ p K+ Λ 0.0 0.0 2.131 2.131
E16M42 dσ/dcos(θK+) γ p K+ Λ 0.0 0.0 2.142 2.142
E16M43 dσ/dcos(θK+) γ p K+ Λ 0.0 0.0 2.153 2.153
E16M44 dσ/dcos(θK+) γ p K+ Λ 0.0 0.0 2.164 2.164
E16M45 dσ/dcos(θK+) γ p K+ Λ 0.0 0.0 2.175 2.175
E16M46 dσ/dcos(θK+) γ p K+ Λ 0.0 0.0 2.185 2.185
E16M47 dσ/dcos(θK+) γ p K+ Λ 0.0 0.0 2.196 2.196
E16M48 dσ/dcos(θK+) γ p K+ Λ 0.0 0.0 2.207 2.207
E16M49 dσ/dcos(θK+) γ p K+ Λ 0.0 0.0 2.217 2.217
E16M50 dσ/dcos(θK+) γ p K+ Λ 0.0 0.0 2.228 2.228
E16M51 dσ/dcos(θK+) γ p K+ Λ 0.0 0.0 2.239 2.239
E16M52 dσ/dcos(θK+) γ p K+ Λ 0.0 0.0 2.249 2.249
E16M53 dσ/dcos(θK+) γ p K+ Λ 0.0 0.0 2.26 2.26
E16M54 dσ/dcos(θK+) γ p K+ Λ 0.0 0.0 2.27 2.27
E16M55 dσ/dcos(θK+) γ p K+ Λ 0.0 0.0 2.281 2.281
E16M56 dσ/dcos(θK+) γ p K+ Λ 0.0 0.0 2.291 2.291
E16M57 dσ/dcos(θK+) γ p K+ Λ 0.0 0.0 2.301 2.301
E16M58 dσ/dcos(θK+) γ p K+ Λ 0.0 0.0 2.332 2.332
E16M59 dσ/dcos(θK+) γ p K+ Λ 0.0 0.0 2.343 2.343
E16M60 dσ/dcos(θK+) γ p K+ Λ 0.0 0.0 2.353 2.353
E16M61 dσ/dcos(θK+) γ p K+ Λ 0.0 0.0 2.363 2.363
E16M62 dσ/dcos(θK+) γ p K+ Λ 0.0 0.0 2.372 2.372
E16M63 dσ/dcos(θK+) γ p K+ Λ 0.0 0.0 2.382 2.382
E16M64 dσ/dcos(θK+) γ p K+ Λ 0.0 0.0 2.392 2.392
E16M65 dσ/dcos(θK+) γ p K+ Λ 0.0 0.0 2.402 2.402
E16M66 dσ/dcos(θK+) γ p K+ Λ 0.0 0.0 2.411 2.411
E16M67 dσ/dcos(θK+) γ p K+ Λ 0.0 0.0 2.421 2.421
E16M68 dσ/dcos(θK+) γ p K+ Λ 0.0 0.0 2.431 2.431
E16M69 dσ/dcos(θK+) γ p K+ Λ 0.0 0.0 2.44 2.44
E16M70 dσ/dcos(θK+) γ p K+ Λ 0.0 0.0 2.45 2.45
E16M71 dσ/dcos(θK+) γ p K+ Λ 0.0 0.0 2.459 2.459
E16M72 dσ/dcos(θK+) γ p K+ Λ 0.0 0.0 2.469 2.469
E16M73 dσ/dcos(θK+) γ p K+ Λ 0.0 0.0 2.478 2.478
E16M74 dσ/dcos(θK+) γ p K+ Λ 0.0 0.0 2.487 2.487
E16M75 dσ/dcos(θK+) γ p K+ Λ 0.0 0.0 2.496 2.496
E16M76 dσ/dcos(θK+) γ p K+ Λ 0.0 0.0 2.506 2.506
E16M77 dσ/dcos(θK+) γ p K+ Λ 0.0 0.0 2.515 2.515
E16M78 dσ/dcos(θK+) γ p K+ Λ 0.0 0.0 2.524 2.524
E16M79 dσ/dcos(θK+) γ p K+ Λ 0.0 0.0 2.533 2.533
E16M80 dσ/dcos(θK+) γ p K+ Λ 0.0 0.0 1.628 2.533
Created in SINP MSU, CLAS Collaboration