CLAS Physics Database

Measurement E151M3050

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: 0.3596
Q2: 0.348 GeV2
W: 1475.0 GeV
Ebeam: 1.9889 GeV
ε: 0.7924

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty syst. uncert.
0.65 126.0 -0.2914 0.279 0.0306
0.65 258.0 0.2058 0.2545 0.0303
0.75 102.0 -0.1972 0.2724 0.0303
0.75 246.0 -0.8365 0.1507 0.0343
0.85 66.0 0.05 0.2752 0.03
0.85 270.0 0.0178 0.2549 0.03
0.95 258.0 0.2047 0.2599 0.0303