CLAS Physics Database

Measurement E102M65

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: 2.1 — 2.9 GeV2
W: 1.55 — 1.57 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 0.299 0.045
-0.4 15.0 0.346 0.048
0.0 15.0 0.29 0.055
0.4 15.0 0.252 0.048
0.8 15.0 0.223 0.05
-0.8 45.0 0.239 0.043
-0.4 45.0 0.307 0.051
0.0 45.0 0.316 0.055
0.4 45.0 0.145 0.047
0.8 45.0 0.168 0.044
-0.8 75.0 0.255 0.046
-0.4 75.0 0.182 0.046
0.0 75.0 0.195 0.048
0.4 75.0 0.187 0.06
0.8 75.0 0.136 0.047
-0.8 105.0 0.273 0.051
-0.4 105.0 0.279 0.057
0.0 105.0 0.181 0.065
0.4 105.0 0.272 0.081
0.8 105.0 0.168 0.054
-0.8 135.0 0.184 0.038
-0.4 135.0 0.097 0.049
0.0 135.0 0.105 0.055
0.4 135.0 0.326 0.097
0.8 135.0 0.111 0.048
-0.8 165.0 0.181 0.035
-0.4 165.0 0.339 0.052
0.0 165.0 0.212 0.05
0.4 165.0 0.262 0.058
0.8 165.0 0.147 0.044