CLAS Physics Database

Measurement E151M1177

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: 0.077
Q2: 0.1715 GeV2
W: 1805.0 GeV
Ebeam: 2.999 GeV
ε: 0.8287

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] AUL uncertainty
0.55 114.0 -0.8201 0.8245
0.75 90.0 0.1589 0.9774
0.75 102.0 1.9156 1.0954
0.75 210.0 -0.5004 0.7203
0.85 90.0 -0.2817 0.801
0.85 102.0 -0.0802 0.8635
0.85 126.0 -1.1932 0.7436
0.85 174.0 1.2878 0.9975
0.85 186.0 0.9638 0.8373
0.85 198.0 1.1582 0.7636
0.85 210.0 -0.7483 0.6733
0.85 222.0 -0.7424 0.7213
0.85 234.0 0.2922 0.7241
0.95 186.0 -0.8974 0.738
0.95 198.0 1.3217 1.0849
0.95 210.0 1.0844 0.9127
0.95 222.0 2.1439 1.0362