CLAS Physics Database

Measurement E151M2891

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: ALU
εL: 0.0332
Q2: 0.0496 GeV2
W: 1595.0 GeV
Ebeam: 1.3383 GeV
ε: 0.5578

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty syst. uncert.
0.55 222.0 -0.0403 0.2083 0.0301
0.65 150.0 -0.0928 0.2185 0.0301
0.65 222.0 0.2255 0.225 0.0303
0.75 234.0 0.01 0.2292 0.03
0.85 138.0 -0.1489 0.258 0.0301
0.85 150.0 0.2273 0.2771 0.0303
0.85 222.0 0.1131 0.266 0.0301
0.85 234.0 -0.0104 0.2789 0.03
0.85 246.0 0.1047 0.2637 0.0301
0.65 234.0 0.0834 0.3893 0.03
0.65 246.0 -0.3693 0.3711 0.0309
0.75 222.0 0.51 0.2805 0.0317
0.75 234.0 -0.1518 0.4093 0.0302
0.85 234.0 -0.0605 0.4247 0.03