Measurement E151M1927

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:	0.0809
Q²:	0.1435 GeV²
W:	1685.0 GeV
E_beam:	1.9889 GeV
ε:	0.7075

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.65	210.0	-0.4841	0.6786
0.75	234.0	-1.1263	0.6036
0.85	222.0	-0.1621	0.7076
0.85	246.0	-0.9058	0.7061

CLAS Physics Database