CLAS Physics Database

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Measurement E39M180

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Experiment: E1-5st-Sigma0 (E93-030/E00-112), 1999

Spokespersons: Mestayer, Hicks, Carman, Raue

Experiment comment: 5 structure function group analysis results for the K⁺Σ⁰ channel.

Measurement comment: Differential cross sections for two different torus currents, 1500A and 2250A at 2.567GeV beam energy, were combined using error weighted average.

Publication:

D.S. Carman, B.A. Raue, and CLAS Collaboration Beam-Recoil Polarization Transfer in the Nucleon Resonance Region in the Exclusive ep -> e′K⁺Λ and ep -> e′K⁺Σ⁰ Reactions at CLAS // PRC 79, 065205 (2009)

Quantity measured: dσ/dΩ, nb/sr
Differential cross section.
Beam: e, polarization: none
Target: p (Z=1, A=1), polarization: none
Final state: K⁺ Σ⁰, polarization: none

Q² :	1 GeV²
W :	2.05 GeV
ε :	0.119304

Select data slice:
cos(θ) =

Fit φ dependence:

Observable quantity measured (Y axis): dσ/dΩ, nb/sr
Plot measurement data

Parameter (X axis): φ,

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Measured data:

cos(θ)	φ	dσ/dΩ, nb/sr	Data errors, nb/sr
-0.6	-157.5	16.10494	11.909929
-0.6	-112.5	11.36307	8.451316
-0.6	-67.5	0	0
-0.6	-22.5	0	0
-0.6	22.5	10.840789	9.899816
-0.6	67.5	0	0
-0.6	112.5	0	0
-0.6	157.5	37.184422	18.355825
-0.25	-157.5	15.805018	21.221087
-0.25	-112.5	29.633564	13.42241
-0.25	-67.5	24.808735	12.350939
-0.25	-22.5	0	0
-0.25	22.5	9.934609	8.398287
-0.25	67.5	14.721986	11.0643
-0.25	112.5	33.683693	15.778268
-0.25	157.5	27.632168	15.691507
0.05	-165	41.884251	22.537359
0.05	-135	8.971038	9.111377
0.05	-105	10.663704	8.197284
0.05	-75	37.222328	21.119982
0.05	-45	42.936981	18.128168
0.05	-15	40.873371	20.690235
0.05	15	0	0
0.05	45	37.74456	18.377859
0.05	75	23.199257	14.487992
0.05	105	33.492065	15.57435
0.05	135	35.867474	15.321478
0.05	165	31.10154	17.666279
0.35	-165	32.86203	15.264808
0.35	-135	36.752647	21.926914
0.35	-105	27.594631	14.709896
0.35	-75	19.658064	11.125405
0.35	-45	17.420023	11.813879
0.35	-15	18.046352	13.542827
0.35	15	0	0
0.35	45	14.92374	20.042873
0.35	75	18.685583	10.912168
0.35	105	23.308796	13.105488
0.35	135	52.157124	22.772387
0.35	165	25.882223	23.248272
0.65	-165	10.427295	24.48357
0.65	-135	20.057961	31.885471
0.65	-105	25.317467	28.677467
0.65	-75	24.786133	17.495302
0.65	-45	57.038044	34.369057
0.65	-15	47.696175	49.558887
0.65	15	88.163277	68.555222
0.65	45	85.362602	42.653084
0.65	75	16.978859	14.545958
0.65	105	13.872398	26.304913
0.65	135	40.507565	21.413687
0.65	165	21.405626	22.991238