CLAS Physics Database

Measurement E151M3356

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: 0.0651
Q2: 0.0844 GeV2
W: 1655.0 GeV
Ebeam: 2.2596 GeV
ε: 0.826

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty
0.55 126.0 0.0613 0.2393
0.65 222.0 0.0782 0.2694
0.85 102.0 0.287 0.2119
0.85 126.0 0.6224 0.2246
0.45 270.0 -0.3057 0.2515
0.55 270.0 0.0587 0.2565
0.65 114.0 0.0818 0.2446
0.65 138.0 0.1093 0.257
0.65 222.0 -0.5145 0.2236
0.75 126.0 0.306 0.2464
0.75 210.0 0.2953 0.2466
0.75 282.0 0.0762 0.227
0.85 114.0 -0.1116 0.242
0.85 210.0 0.2953 0.2643
0.85 222.0 -0.1961 0.2351