CLAS Physics Database

Measurement E102M48

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: 1.73 — 1.75 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 0.028
-0.4 15.0 0.025 0.022
0.0 15.0 0.069 0.032
0.4 15.0 0.058 0.032
0.8 15.0 0.029 0.024
-0.8 45.0 0.044 0.027
-0.4 45.0 0.054 0.03
0.0 45.0 0.091 0.036
0.4 45.0 0.07 0.033
0.8 45.0 0.111 0.037
-0.8 75.0 0.062 0.038
-0.4 75.0 -0.011 0.055
0.0 75.0 -0.014 0.049
0.4 75.0 0.142 0.049
0.8 75.0 0.164 0.048
-0.8 105.0 0.078 0.05
-0.4 105.0 0.06 0.069
0.0 105.0 0.195 0.058
0.4 105.0 0.119 0.039
0.8 105.0 0.145 0.041
-0.8 135.0 -0.032 0.035
0.0 135.0 0.053 0.04
0.4 135.0 0.135 0.038
0.8 135.0 0.16 0.054
-0.8 165.0 0.076 0.034
0.8 165.0 -0.012 0.095