CLAS Physics Database

Measurement E151M679

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: 0.1217
Q2: 0.1715 GeV2
W: 1625.0 GeV
Ebeam: 1.9889 GeV
ε: 0.7519

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] AUL uncertainty
0.65 114.0 -1.2483 0.604
0.65 126.0 -0.4734 0.7253
0.65 210.0 1.8009 0.991
0.65 294.0 0.318 0.773
0.75 126.0 -0.9306 0.6728
0.75 138.0 -0.6247 0.7534
0.75 234.0 1.5917 0.8277
0.75 246.0 -0.0089 0.7933
0.75 294.0 1.0857 0.8227
0.85 90.0 -0.2174 0.7815
0.85 102.0 -0.3536 0.669
0.85 222.0 -0.5408 0.6145
0.85 234.0 2.09 0.624
0.85 246.0 0.6184 0.687
0.85 258.0 1.4988 0.8263
0.95 234.0 0.2887 0.7016
0.95 246.0 0.2458 0.6542