CLAS Physics Database

Measurement E151M1735

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: ALL
εL: 0.7776
Q2: 0.2915 GeV2
W: 1295.0 GeV
Ebeam: 1.9889 GeV
ε: 0.8969

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALL uncertainty
0.65 90.0 1.039 0.6406
0.65 270.0 0.9413 0.5342
0.75 78.0 0.8777 0.626
0.75 90.0 0.3916 0.6837
0.75 102.0 0.3439 0.6295
0.75 258.0 0.0648 0.5774
0.75 282.0 -0.0636 0.5025
0.75 294.0 -0.0539 0.6456
0.85 78.0 0.1049 0.6015
0.85 90.0 0.7169 0.6098
0.85 102.0 0.4032 0.572
0.85 114.0 0.4012 0.7319
0.85 126.0 0.7654 0.6648
0.85 246.0 -0.0245 0.6021
0.85 258.0 -0.138 0.6606
0.85 270.0 0.6966 0.4888
0.85 294.0 0.5621 0.545
0.95 78.0 1.3206 0.4367
0.95 90.0 -0.5085 0.56
0.95 102.0 0.4197 0.657
0.95 114.0 0.6403 0.6496
0.95 126.0 -0.8854 0.5411
0.95 246.0 1.2693 0.5183
0.95 282.0 -0.0887 0.5838
0.95 294.0 0.5903 0.5749