Measurement E151M2403

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:	0.1299
Q²:	0.348 GeV²
W:	1805.0 GeV
E_beam:	2.999 GeV
ε:	0.7874

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.85	90.0	1.0594	1.0349	0.0825
0.85	210.0	0.8695	1.098	0.0698
0.95	198.0	0.1832	1.0359	0.0328
0.95	222.0	-0.8143	0.9858	0.0662
0.95	246.0	-0.3289	0.9463	0.0383

CLAS Physics Database