CLAS Physics Database

Measurement E151M1084

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: 0.0904
Q2: 0.0844 GeV2
W: 1595.0 GeV
Ebeam: 2.999 GeV
ε: 0.9285

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] AUL uncertainty
0.55 114.0 -0.0578 0.9646
0.65 114.0 -0.2204 0.7303
0.65 126.0 0.3758 0.9257
0.75 114.0 -1.1423 0.7294
0.75 126.0 -1.3981 0.6602
0.75 138.0 -1.2193 0.7128
0.75 210.0 -0.5678 0.7989
0.75 222.0 0.666 0.9207
0.75 234.0 0.4748 0.945
0.85 90.0 -1.2001 0.567
0.85 102.0 -0.7026 0.6642
0.85 114.0 -0.6489 0.778
0.85 210.0 0.9779 0.9775
0.85 222.0 -0.2047 0.763
0.85 234.0 -0.759 0.6578
0.85 246.0 2.3133 0.8884
0.95 246.0 3.4616 3.4616