CLAS Physics Database

Measurement E151M22

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: 0.0761
Q2: 0.0101 GeV2
W: 1235.0 GeV
Ebeam: 1.0539 GeV
ε: 0.9182

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] AUL uncertainty
0.45 54.0 -0.0317 0.5428
0.55 246.0 0.4317 0.4312
0.55 258.0 -0.2673 0.3243
0.55 270.0 -0.4484 0.3074
0.65 162.0 -0.6866 0.4927
0.65 186.0 0.2395 0.5344
0.65 234.0 -0.3397 0.4209
0.65 246.0 -0.2663 0.3223
0.65 258.0 -0.3168 0.283
0.65 270.0 -0.1305 0.3825
0.75 162.0 1.2795 0.4915
0.75 174.0 0.1634 0.461
0.75 186.0 0.664 0.5846
0.75 198.0 0.7124 0.6119
0.75 210.0 0.7305 0.5594
0.75 234.0 0.4308 0.4077
0.75 246.0 -0.0479 0.359
0.75 258.0 -0.3755 0.33
0.75 270.0 0.8621 0.4546
0.85 174.0 -0.5709 0.475