CLAS Physics Database

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Measurement E102M81

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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 :	1.87 — 1.89 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	0.014	0.002
-0.4	15	-0.003	0.02	0.001
0	15	0.011	0.016	0.002
0.4	15	0.049	0.042	0.005
0.8	15	0.027	0.023	0.001
-0.8	45	0.015	0.015	0.003
-0.4	45	-0.011	0.014	0.001
0	45	0.034	0.025	0.004
0.4	45	0.047	0.03	0.005
0.8	45	0.013	0.017	0.005
-0.8	75	0.023	0.022	0.001
-0.4	75	-0.009	0.069	0.006
0	75	0.057	0.033	0.013
0.4	75	0.029	0.022	0.003
0.8	75	0.066	0.033	0.009
-0.8	105	0.009	0.031	0.014
-0.4	105	0.005	0.018	0.001
0	105	0.025	0.019	0.002
0.4	105	0.064	0.034	0.007
0.8	105	0.034	0.025	0.007
-0.4	135	-0.013	0.017	0.002
0	135	0.032	0.044	0.022
0.4	135	0.013	0.05	0.003
0.8	135	0.041	0.039	0.004