CLAS Physics Database

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Measurement E102M40

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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 :	1.57 — 1.59 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	0.506	0.061	0.043
-0.4	15	0.349	0.047	0.006
0	15	0.525	0.055	0.046
0.4	15	0.325	0.048	0.038
0.8	15	0.303	0.049	0.019
-0.8	45	0.402	0.051	0.03
-0.4	45	0.28	0.041	0.028
0	45	0.346	0.05	0.033
0.4	45	0.348	0.048	0.026
0.8	45	0.233	0.04	0.026
-0.8	75	0.445	0.052	0.036
-0.4	75	0.241	0.049	0.03
0	75	0.576	0.095	0.051
0.4	75	0.268	0.073	0.027
0.8	75	0.19	0.056	0.018
-0.8	105	0.36	0.047	0.043
-0.4	105	0.436	0.082	0.053
0.8	105	0.104	0.059	0.017
-0.8	135	0.451	0.052	0.047
-0.4	135	0.173	0.056	0.075
0.8	135	0.243	0.064	0.036
-0.8	165	0.365	0.044	0.03
-0.4	165	0.341	0.049	0.037
0	165	0.422	0.067	0.065
0.4	165	0.267	0.073	0.063
0.8	165	0.159	0.051	0.02