CLAS Physics Database

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Measurement E102M49

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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 :	1.75 — 1.77 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	0.051	0.024	0.005
-0.4	15	0.042	0.02	0.002
0	15	0.072	0.03	0.004
0.4	15	0.039	0.021	0.003
0.8	15	0.083	0.028	0.006
-0.8	45	0.053	0.035	0.006
-0.4	45	0.005	0.027	0
0	45	-0.018	0.03	0.003
0.4	45	0.084	0.062	0.009
0.8	45	0.078	0.042	0.004
-0.8	75	0.056	0.039	0.008
0	75	0.098	0.059	0.012
0.4	75	0.024	0.033	0.002
0.8	75	0.065	0.043	0.003
-0.8	105	0.069	0.045	0.007
-0.4	105	0.028	0.08	0.007
0	105	0.037	0.028	0.003
0.4	105	0.092	0.041	0.008
0.8	105	0.091	0.035	0.007
-0.8	135	-0.001	0.032	0
-0.4	135	0.144	0.085	0.006
0	135	0.067	0.035	0.004
0.4	135	0.059	0.036	0.009
0.8	135	0.171	0.06	0.009
-0.8	165	0.002	0.028	0.001