Measurement E151M2038

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:	0.0878
Q²:	0.0415 GeV²
W:	1445.0 GeV
E_beam:	2.2596 GeV
ε:	0.9368

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.75	234.0	0.2892	1.0336	0.0401
0.85	246.0	-1.1023	1.2658	0.1057
0.65	234.0	1.5319	0.8792	0.1041
0.65	246.0	-0.343	0.9016	0.0374
0.75	114.0	-0.9905	0.8807	0.0711
0.75	126.0	0.1309	0.8295	0.0312
0.75	138.0	-1.1804	0.9474	0.0824
0.75	222.0	-0.4172	1.0077	0.0405
0.75	234.0	0.5156	0.7986	0.045
0.75	246.0	-1.7424	0.7837	0.1172
0.85	234.0	0.1209	1.0051	0.031

CLAS Physics Database