Measurement E151M1666

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:	0.0207
Q²:	0.0291 GeV²
W:	1595.0 GeV
E_beam:	1.3383 GeV
ε:	0.5777

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.55	222.0	-0.7839	0.9538	0.0557
0.75	234.0	-0.6346	0.8326	0.0484
0.85	222.0	0.2844	0.7342	0.0345
0.55	234.0	-2.2285	0.7728	0.133
0.65	234.0	-0.4541	1.024	0.04
0.75	234.0	-1.4402	0.9511	0.089
0.85	234.0	-1.8159	1.0869	0.1098
0.85	246.0	-0.2173	1.2653	0.0326

CLAS Physics Database