CLAS Physics Database

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Measurement E102M41

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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 :	1.3 — 2.1 GeV²
W :	1.59 — 1.61 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	0.437	0.052	0.025
-0.4	15	0.35	0.043	0.059
0	15	0.245	0.041	0.025
0.4	15	0.195	0.039	0.013
0.8	15	0.122	0.034	0.014
-0.8	45	0.29	0.042	0.021
-0.4	45	0.306	0.046	0.048
0	45	0.34	0.05	0.016
0.4	45	0.159	0.038	0.011
0.8	45	0.055	0.032	0.003
-0.8	75	0.323	0.049	0.009
-0.4	75	0.161	0.048	0.025
0	75	0.343	0.09	0.056
0.4	75	0.113	0.073	0.015
0.8	75	0.075	0.045	0.011
-0.8	105	0.296	0.048	0.033
-0.4	105	0.125	0.071	0.026
0.8	105	-0.046	0.054	0.004
-0.8	135	0.306	0.045	0.021
-0.4	135	0.29	0.1	0.034
0.8	135	-0.065	0.045	0.012
-0.8	165	0.291	0.037	0.021
-0.4	165	0.298	0.053	0.029
0	165	0.258	0.063	0.059
0.4	165	0.186	0.081	0.018
0.8	165	0.154	0.049	0.022