CLAS Physics Database

Measurement E151M2212

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: ALL
εL: 0.3554
Q2: 0.1205 GeV2
W: 1355.0 GeV
Ebeam: 2.999 GeV
ε: 0.9699

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALL uncertainty syst. uncert.
0.65 258.0 -0.0107 0.9199 0.03
0.65 270.0 0.6767 0.8057 0.0575
0.75 90.0 1.2413 0.6716 0.0949
0.75 102.0 0.9646 0.8186 0.0761
0.75 114.0 0.6043 0.7779 0.0531
0.75 246.0 -0.6943 0.7115 0.0586
0.75 258.0 -0.7005 0.6747 0.059
0.75 270.0 -1.2799 0.7292 0.0975
0.75 282.0 -0.2759 0.9047 0.0361
0.85 90.0 1.802 0.8856 0.1341
0.85 102.0 0.7663 0.6764 0.0631
0.85 114.0 0.9026 0.7339 0.072
0.85 126.0 0.3421 0.6962 0.0389
0.85 138.0 1.4413 0.7357 0.1087
0.85 222.0 -0.1982 0.7226 0.0333
0.85 234.0 0.5977 0.7511 0.0527
0.85 246.0 -0.805 0.6781 0.0656
0.85 258.0 -0.8073 0.5814 0.0658
0.85 270.0 1.1402 0.6814 0.088
0.85 282.0 -0.4016 0.6805 0.0418
0.95 102.0 0.6701 0.8654 0.0571
0.95 114.0 0.3491 0.758 0.0393
0.95 258.0 -1.1716 0.6675 0.0901
0.95 270.0 -0.4031 0.6765 0.0419
0.95 282.0 1.0381 0.6372 0.081
0.95 294.0 0.7864 0.7421 0.0644