CLAS Physics Database

Measurement E151M878

Experiment: EG4
Year: 2016

Experiment comment:

Final asymmetry results for the ep-> e pi+ (n) channel extracted from CLAS/EG4 data obtained using a longitudinally polarized beam and a longitudinally polarized NH3 target (CAA HS07-02).
Spokesperson: Xiaochao Zheng
Reaction: ep → π+n
Polarization: beam (longitudinal), target (longitudinal)
Quantity: AUL
εL: 0.1483
Q2: 0.1435 GeV2
W: 1565.0 GeV
Ebeam: 2.2596 GeV
ε: 0.8604

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] AUL uncertainty syst. uncert.
0.65 234.0 -0.3841 0.7293 0.0464
0.75 114.0 -0.4596 0.7471 0.052
0.75 210.0 -1.0112 0.6033 0.098
0.75 222.0 0.2757 0.7625 0.0393
0.85 90.0 0.4197 0.9747 0.049
0.85 222.0 0.4422 0.8709 0.0506
0.85 234.0 0.0363 0.7995 0.0302
0.85 246.0 1.0917 0.8675 0.1051
0.85 258.0 -0.9229 0.7365 0.0903
0.55 126.0 0.2887 0.7341 0.0355
0.65 102.0 -0.3493 0.7295 0.0378
0.65 126.0 -1.645 0.5652 0.112
0.75 114.0 -0.1216 0.8233 0.031
0.75 222.0 1.6575 0.8749 0.1128
0.75 234.0 0.2348 0.8686 0.0337
0.75 294.0 0.3272 0.7233 0.0369
0.85 210.0 1.0371 0.9386 0.0744
0.85 222.0 -1.1041 0.7679 0.0784
0.85 234.0 0.9863 0.7603 0.0713
0.85 246.0 -0.1172 0.7575 0.031
0.85 258.0 1.0045 0.9391 0.0724
0.95 246.0 -0.1072 1.3089 0.0308
0.95 258.0 0.3155 1.1779 0.0365