CLAS Physics Database

Measurement E151M105

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: 0.0217
Q2: 0.0071 GeV2
W: 1355.0 GeV
Ebeam: 1.0539 GeV
ε: 0.8079

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] AUL uncertainty syst. uncert.
0.45 42.0 0.5861 0.7861 0.0731
0.45 54.0 -0.9759 0.6905 0.115
0.55 42.0 -0.5338 0.7736 0.0677
0.55 54.0 0.1184 0.7892 0.0329
0.55 222.0 1.1613 0.8319 0.1355
0.55 234.0 -0.302 0.6649 0.0456
0.55 246.0 -0.3066 0.714 0.046
0.65 30.0 2.0084 0.8212 0.2305
0.65 42.0 0.6565 0.8012 0.0805
0.65 54.0 -0.6291 0.7337 0.0776
0.65 234.0 -0.1171 0.5314 0.0328
0.65 246.0 0.6764 0.5853 0.0826
0.75 222.0 0.4044 0.6928 0.0549
0.75 234.0 0.1622 0.5745 0.0352
0.75 246.0 -0.6437 0.5749 0.0791
0.75 258.0 -1.1012 0.6094 0.1288
0.85 222.0 0.5567 0.7212 0.0701
0.85 234.0 1.1673 0.678 0.1362
0.85 246.0 0.4704 0.5852 0.0614