CLAS Physics Database

Measurement E151M2847

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: 0.0112
Q2: 0.0101 GeV2
W: 1535.0 GeV
Ebeam: 1.3383 GeV
ε: 0.6959

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty syst. uncert.
0.55 138.0 -0.4686 0.31 0.0314
0.65 222.0 0.2732 0.2848 0.0305
0.75 222.0 -0.0795 0.3276 0.03
0.75 234.0 0.1702 0.3592 0.0302
0.55 222.0 0.2577 0.2601 0.0304
0.65 138.0 -0.1158 0.2692 0.0301
0.65 222.0 -0.3917 0.2505 0.031
0.75 222.0 -0.0684 0.2465 0.03
0.85 126.0 0.1214 0.2757 0.0301
0.85 222.0 -0.2522 0.2654 0.0304