Measurement E151M1928

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:	0.0923
Q²:	0.1715 GeV²
W:	1685.0 GeV
E_beam:	1.9889 GeV
ε:	0.6939

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.75	210.0	-2.0698	2.0698
0.75	294.0	0.9824	0.6786
0.85	222.0	0.0385	0.6569
0.85	234.0	0.04	0.6082
0.85	246.0	0.6304	0.6074

CLAS Physics Database