CLAS Physics Database

Measurement E151M1144

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: 0.1958
Q2: 0.4155 GeV2
W: 1715.0 GeV
Ebeam: 2.999 GeV
ε: 0.8206

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] AUL uncertainty syst. uncert.
0.55 102.0 1.2058 1.0154 0.0931
0.75 210.0 1.0804 0.9929 0.0845
0.75 234.0 0.1527 0.8393 0.032
0.85 66.0 0.1275 0.8438 0.0314
0.85 90.0 -0.3632 0.7518 0.0401
0.85 198.0 0.1936 0.8495 0.0332
0.85 210.0 0.5598 0.9574 0.0507
0.85 222.0 -0.6378 0.6924 0.0554
0.85 234.0 0.1196 0.6655 0.0312
0.85 246.0 1.0576 0.7538 0.0829
0.85 258.0 -0.5106 0.8138 0.0479
0.85 270.0 -0.1679 0.8218 0.0324
0.95 210.0 0.3353 0.8359 0.0387
0.95 222.0 1.4231 0.7847 0.1083
0.95 234.0 0.7901 0.6889 0.0651
0.95 246.0 1.6354 0.7951 0.1232
0.95 258.0 0.5309 0.6592 0.0491
0.95 270.0 -1.4227 0.5024 0.1082
0.95 282.0 0.6818 0.7087 0.0582