CLAS Physics Database

Measurement E151M662

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: AUL
εL: 0.1221
Q2: 0.1435 GeV2
W: 1595.0 GeV
Ebeam: 1.9889 GeV
ε: 0.7892

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] AUL uncertainty syst. uncert.
0.65 114.0 -0.814 0.6361 0.0581
0.65 234.0 0.1812 0.8322 0.032
0.65 294.0 -0.7858 0.6004 0.0567
0.75 114.0 0.9839 0.837 0.0672
0.75 222.0 0.9976 0.6727 0.068
0.75 234.0 2.2232 0.7724 0.1392
0.75 246.0 1.6864 0.816 0.1074
0.85 102.0 -0.8538 0.6521 0.0602
0.85 114.0 -1.2396 0.6531 0.0815
0.85 222.0 0.574 0.6674 0.0462
0.85 234.0 -0.1511 0.7132 0.0314
0.85 246.0 0.7186 0.8096 0.0532
0.95 222.0 -0.1316 0.6139 0.0311
0.95 246.0 -0.2825 0.5318 0.0346
0.95 258.0 -0.572 0.5259 0.0461