Measurement E151M2144

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:	0.049
Q²:	0.0707 GeV²
W:	1685.0 GeV
E_beam:	2.2596 GeV
ε:	0.81

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.45	270.0	0.4554	0.6608
0.65	78.0	-0.2125	0.6674
0.65	126.0	-0.4311	0.6309
0.65	210.0	-0.2877	0.7919
0.75	210.0	0.1136	0.7537
0.75	234.0	0.5824	0.7836
0.75	270.0	-0.0715	0.67
0.75	282.0	0.9855	0.617
0.85	102.0	0.2295	0.7345
0.85	114.0	0.2924	0.6739
0.85	126.0	-0.36	0.7958
0.85	210.0	-0.3143	0.8222
0.85	222.0	-0.4544	0.7338
0.45	282.0	-1.6434	1.5394
0.65	126.0	-2.7758	1.8634
0.65	198.0	-2.4291	2.006
0.75	210.0	-4.078	1.8105
0.75	234.0	-2.8284	1.7961
0.75	270.0	-3.0523	1.6908
0.75	282.0	-0.978	1.4297
0.75	294.0	1.9244	1.7548
0.85	102.0	0.9253	2.3084
0.85	114.0	-0.1472	2.1049
0.85	210.0	-6.1845	6.1845

CLAS Physics Database