CLAS Physics Database

Measurement E102M49

Experiment: E-89-039
Year: 2007

Measurement comment:

Electron beam energy is 4.056 GeV. Measurements are average of Phi* and 360-Phi*.
Spokespersons: S. Dytman, K. Giovanetti
Reaction: ep → η p
Polarization: none
Quantity: dσ/dΩ
Q2: 1.3 — 2.1 GeV2
W: 1.75 — 1.77 GeV
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 //

Slice: cos(θ) = dimensionless

Measurement data
cos(θ) φ, [degree] dσ/dΩ, [μb/sr] uncertainty
-0.8 15.0 0.051 0.024
-0.4 15.0 0.042 0.02
0.0 15.0 0.072 0.03
0.4 15.0 0.039 0.021
0.8 15.0 0.083 0.028
-0.8 45.0 0.053 0.035
-0.4 45.0 0.005 0.027
0.0 45.0 -0.018 0.03
0.4 45.0 0.084 0.062
0.8 45.0 0.078 0.042
-0.8 75.0 0.056 0.039
0.0 75.0 0.098 0.059
0.4 75.0 0.024 0.033
0.8 75.0 0.065 0.043
-0.8 105.0 0.069 0.045
-0.4 105.0 0.028 0.08
0.0 105.0 0.037 0.028
0.4 105.0 0.092 0.041
0.8 105.0 0.091 0.035
-0.8 135.0 -0.001 0.032
-0.4 135.0 0.144 0.085
0.0 135.0 0.067 0.035
0.4 135.0 0.059 0.036
0.8 135.0 0.171 0.06
-0.8 165.0 0.002 0.028