CLAS Physics Database

Measurement E151M3138

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: 0.1201
Q2: 0.205 GeV2
W: 1655.0 GeV
Ebeam: 1.9889 GeV
ε: 0.7083

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty syst. uncert.
0.65 294.0 -0.2756 0.272 0.0305
0.85 102.0 -0.0992 0.2426 0.0301
0.85 246.0 0.0267 0.2496 0.03
0.85 258.0 -0.3627 0.2544 0.0309