Measurement E151M1704

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:	0.9358
Q²:	0.205 GeV²
W:	1235.0 GeV
E_beam:	1.9889 GeV
ε:	0.9361

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.25	66.0	-0.6174	0.6574
0.35	66.0	-0.4524	0.5207
0.35	78.0	0.5322	0.6535
0.45	66.0	-1.0681	0.6236
0.45	78.0	-1.3088	0.5795
0.45	282.0	-1.3006	0.4782
0.45	294.0	-0.4249	0.6317
0.55	270.0	0.627	0.5989
0.55	282.0	0.0694	0.6508
0.55	294.0	-0.2143	0.6173
0.65	270.0	-0.0475	0.5643
0.65	282.0	0.2696	0.5068
0.65	294.0	0.5602	0.5533
0.75	90.0	0.3184	0.6887
0.75	102.0	-0.5018	0.6043
0.75	258.0	0.2025	0.613
0.75	270.0	-0.2555	0.5324
0.75	282.0	0.2811	0.5035
0.75	294.0	-0.3574	0.6154
0.85	78.0	-0.188	0.5105
0.85	90.0	-0.2366	0.5259
0.85	102.0	-0.8092	0.5194
0.85	114.0	0.5123	0.4951
0.85	258.0	-0.1907	0.5513
0.85	270.0	1.1245	0.4437
0.85	282.0	0.1576	0.573
0.95	66.0	-0.4184	0.4913
0.95	78.0	0.1029	0.581
0.95	90.0	0.0488	0.4873
0.95	102.0	0.2113	0.4715
0.95	114.0	0.2797	0.4986
0.95	126.0	-0.2193	0.5871
0.95	138.0	-0.2636	0.5912

CLAS Physics Database