CLAS Physics Database

Measurement E151M3372

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: 0.0264
Q2: 0.0415 GeV2
W: 1715.0 GeV
Ebeam: 2.2596 GeV
ε: 0.7982

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty
0.75 210.0 0.0218 0.2485
0.75 270.0 0.0035 0.2279
0.75 282.0 -0.3708 0.2198
0.85 114.0 -0.1365 0.2228
0.85 210.0 0.1514 0.2289
0.45 270.0 0.1067 0.2626
0.85 114.0 0.4541 0.2373
0.85 126.0 0.0915 0.2462
0.85 210.0 -0.0851 0.269