Measurement E151M1385

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:	0.008
Q²:	0.005 GeV²
W:	1445.0 GeV
E_beam:	1.0539 GeV
ε:	0.6698

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.45	54.0	0.2679	0.837
0.55	42.0	0.165	0.9417
0.55	54.0	0.6484	0.894
0.55	222.0	0.4112	0.8671
0.65	234.0	0.7417	0.8188
0.75	234.0	-0.6331	0.7346
0.85	222.0	-0.0368	0.7994
0.85	234.0	1.2915	0.6726
0.85	246.0	-0.0457	0.8664

CLAS Physics Database