CLAS Physics Database

Measurement E151M3649

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: 0.0303
Q2: 0.0844 GeV2
W: 1895.0 GeV
Ebeam: 2.999 GeV
ε: 0.7965

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty
0.75 114.0 0.414 0.2489
0.75 270.0 0.1372 0.2478
0.85 102.0 0.0405 0.264
0.85 114.0 0.4019 0.2225
0.85 126.0 -0.2288 0.2661
0.85 186.0 -0.4301 0.2332
0.85 198.0 -0.5996 0.1851
0.85 210.0 -0.1205 0.2566