Measurement E151M1926

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:	A_LL
ε_L:	0.0705
Q²:	0.1205 GeV²
W:	1685.0 GeV
E_beam:	1.9889 GeV
ε:	0.7186

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.45	270.0	-0.3872	0.7167
0.55	270.0	-0.142	0.6872
0.65	138.0	-1.4629	0.5892
0.75	210.0	1.1967	0.6639
0.75	222.0	0.1331	0.7109
0.75	282.0	-0.0405	0.7014
0.85	102.0	-0.0358	0.6665
0.85	198.0	-1.0868	0.6776
0.85	234.0	-0.8309	0.6141
0.85	246.0	-0.5549	0.6807
0.95	234.0	-0.9538	0.5964

CLAS Physics Database