CLAS Physics Database

Measurement E151M3375

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: 0.0432
Q2: 0.0707 GeV2
W: 1715.0 GeV
Ebeam: 2.2596 GeV
ε: 0.7875

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty syst. uncert.
0.75 270.0 -0.1003 0.2566 0.0301
0.85 102.0 -0.1268 0.2648 0.0301
0.85 114.0 0.272 0.2266 0.0305
0.65 138.0 0.01 0.249 0.03
0.65 210.0 0.3222 0.2311 0.0307
0.85 102.0 -0.4166 0.2285 0.0311