CLAS Physics Database

Measurement E151M3167

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: 0.0208
Q2: 0.0415 GeV2
W: 1745.0 GeV
Ebeam: 1.9889 GeV
ε: 0.6931

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty syst. uncert.
0.75 78.0 0.0463 0.2637 0.03
0.75 210.0 -0.0323 0.2496 0.03
0.75 258.0 -0.0041 0.2846 0.03
0.75 270.0 -0.2394 0.2603 0.0304
0.75 282.0 0.1613 0.2558 0.0302