CLAS Physics Database

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Measurement E102M42

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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 :	1.61 — 1.63 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	0.198	0.036	0.02
-0.4	15	0.201	0.035	0.014
0	15	0.238	0.039	0.018
0.4	15	0.103	0.028	0.016
0.8	15	0.021	0.026	0.003
-0.8	45	0.203	0.036	0.015
-0.4	45	0.233	0.04	0.013
0	45	0.224	0.042	0.013
0.4	45	0.109	0.036	0.016
0.8	45	0.071	0.027	0.01
-0.8	75	0.199	0.033	0.026
-0.4	75	0.166	0.054	0.016
0	75	0.131	0.073	0.022
0.4	75	0.186	0.07	0.027
0.8	75	0.043	0.037	0.004
-0.8	105	0.199	0.042	0.008
-0.4	105	0.262	0.09	0.038
0.8	105	0.025	0.055	0.006
-0.8	135	0.236	0.038	0.025
0.8	135	-0.046	0.046	0.011
-0.8	165	0.193	0.037	0.014
-0.4	165	0.143	0.046	0.026
0	165	0.232	0.079	0.044
0.4	165	-0.08	0.052	0.023
0.8	165	0.043	0.038	0.006