CLAS Physics Database

Measurement E102M265

Experiment: E-89-039
Year: 2007

Measurement comment:

Electron beam energy is 1.515 Gev. Fitted cross section asymmetry between phi=0/180 and 90/270 degrees. From fit to angular xs with constraint that fitted xs be positive over all phi.
Spokespersons: S. Dytman, K. Giovanetti
Reaction: ep → η p
Polarization: none
Quantity: AsymTT
Q2: 0.2 — 0.4 GeV2
W: 1.51 — 1.53 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 //

Measurement data
cos(θ) AsymTT
-0.9 -0.04
-0.7 0.18
-0.5 0.278
-0.3 0.247
-0.1 0.134
0.1 0.028
0.3 0.256
0.5 0.243
0.7 0.18
0.9 0.267