CLAS Physics Database

Measurement E151M3604

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: 0.0393
Q2: 0.0707 GeV2
W: 1775.0 GeV
Ebeam: 2.999 GeV
ε: 0.8655

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty
0.65 138.0 0.1763 0.2418
0.75 210.0 0.1304 0.2391
0.75 222.0 -0.2467 0.2315
0.85 102.0 0.2574 0.2343
0.85 126.0 0.2079 0.2595
0.85 174.0 0.8023 0.184
0.85 186.0 -0.2618 0.2138
0.85 198.0 0.2289 0.2319
0.85 210.0 -0.0738 0.2158
0.85 222.0 -0.2708 0.2052