CLAS Physics Database

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Measurement E102M78

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Experiment: E-89-039, 2007

Spokespersons: S. Dytman, K. Giovanetti

Measurement comment: Electron beam energy is 4.056 GeV. Measurements are average of Phi* and 360-Phi*.

Publication:

H. Denizli, J. Mueller, S. Dytman, M.L. Leber, R.D. Levine, J. Miles, K.Y. Kim, and CLAS Collaboration Q² dependence of the S11(1535) Photocoupling and Evidence for a P-wave resonance in η electroproduction //

Quantity measured: dσ/dΩ, mcbn/srad
Differential cross section.
Beam: e, polarization: none
Target: p (Z=1, A=1), polarization: none
Final state: η p, polarization: none

Q² :	2.1 — 2.9 GeV²
W :	1.81 — 1.83 GeV

Select data slice:
cos(θ) = dimensionless

Fit φ dependence:

Observable quantity measured (Y axis): dσ/dΩ, mcbn/srad
Plot measurement data

Parameter (X axis): φ, degree

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

Click here to get calculated fit coefficients in text file, delimited with tabs.

Measured data:

cos(θ), dimensionless	φ, degree	dσ/dΩ, mcbn/srad	Data errors, mcbn/srad	Systematic errors, mcbn/srad
-0.8	15	0.019	0.012	0.001
-0.4	15	-0.006	0.014	0.002
0	15	-0.008	0.017	0
0.4	15	-0.006	0.029	0.001
0.8	15	0.017	0.016	0.002
-0.8	45	0.01	0.015	0.004
-0.4	45	0.01	0.02	0.002
0	45	-0.009	0.022	0.001
0.4	45	-0.024	0.026	0.003
0.8	45	0.019	0.025	0.002
-0.8	75	0.018	0.03	0.002
-0.4	75	0.006	0.031	0
0	75	0.042	0.024	0.006
0.4	75	0.065	0.041	0.016
0.8	75	0.031	0.025	0.003
-0.8	105	-0.002	0.017	0
-0.4	105	0.006	0.024	0.003
0	105	0.013	0.016	0.001
0.4	105	0.064	0.033	0.006
0.8	105	0.041	0.021	0.002
-0.8	135	0.036	0.035	0.028
-0.4	135	0.087	0.061	0.008
0	135	0.038	0.028	0.003
0.4	135	0.068	0.054	0.011
0.8	135	0.044	0.035	0.006
-0.8	165	0.015	0.037	0.001