CLAS Physics Database

Measurement E151M855

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: 0.3095
Q2: 0.2915 GeV2
W: 1505.0 GeV
Ebeam: 2.2596 GeV
ε: 0.847

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] AUL uncertainty syst. uncert.
0.75 102.0 -0.3175 0.5696 0.0365
0.75 246.0 0.6037 0.6895 0.0497
0.85 66.0 0.0007 0.5842 0.03
0.85 246.0 -0.3949 0.5592 0.0396
0.85 270.0 0.062 0.6162 0.0303
0.65 102.0 -0.8424 1.54 0.0833
0.85 270.0 -0.6158 1.4071 0.0643
0.95 294.0 3.3057 4.2099 0.3066