Measurement E151M1901

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:	0.1217
Q²:	0.1715 GeV²
W:	1625.0 GeV
E_beam:	1.9889 GeV
ε:	0.7519

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.65	114.0	-1.321	0.8458
0.65	126.0	0.2831	0.9059
0.65	210.0	-0.3127	1.0302
0.65	294.0	0.0509	0.8747
0.75	126.0	0.5867	0.9201
0.75	138.0	-1.2309	0.9136
0.75	234.0	1.0983	0.8677
0.75	246.0	1.0782	0.8878
0.75	294.0	2.1296	0.6589
0.85	90.0	-0.8005	0.9393
0.85	102.0	1.8171	0.6772
0.85	222.0	0.966	0.7516
0.85	234.0	-0.4488	0.7512
0.85	246.0	0.1158	0.7643
0.85	258.0	-0.3327	0.9136
0.95	234.0	-0.3953	0.7792
0.95	246.0	0.2	0.7536

CLAS Physics Database