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	syst. uncert.
0.25	66.0	-0.6174	0.6574	0.048
0.35	66.0	-0.4524	0.5207	0.0406
0.35	78.0	0.5322	0.6535	0.044
0.45	66.0	-1.0681	0.6236	0.0713
0.45	78.0	-1.3088	0.5795	0.0848
0.45	282.0	-1.3006	0.4782	0.0843
0.45	294.0	-0.4249	0.6317	0.0395
0.55	270.0	0.627	0.5989	0.0484
0.55	282.0	0.0694	0.6508	0.0303
0.55	294.0	-0.2143	0.6173	0.0327
0.65	270.0	-0.0475	0.5643	0.0301
0.65	282.0	0.2696	0.5068	0.0342
0.65	294.0	0.5602	0.5533	0.0453
0.75	90.0	0.3184	0.6887	0.0357
0.75	102.0	-0.5018	0.6043	0.0427
0.75	258.0	0.2025	0.613	0.0324
0.75	270.0	-0.2555	0.5324	0.0338
0.75	282.0	0.2811	0.5035	0.0345
0.75	294.0	-0.3574	0.6154	0.037
0.85	78.0	-0.188	0.5105	0.0321
0.85	90.0	-0.2366	0.5259	0.0333
0.85	102.0	-0.8092	0.5194	0.0575
0.85	114.0	0.5123	0.4951	0.0432
0.85	258.0	-0.1907	0.5513	0.0321
0.85	270.0	1.1245	0.4437	0.0744
0.85	282.0	0.1576	0.573	0.0315
0.95	66.0	-0.4184	0.4913	0.0393
0.95	78.0	0.1029	0.581	0.0306
0.95	90.0	0.0488	0.4873	0.0301
0.95	102.0	0.2113	0.4715	0.0326
0.95	114.0	0.2797	0.4986	0.0345
0.95	126.0	-0.2193	0.5871	0.0328
0.95	138.0	-0.2636	0.5912	0.034

CLAS Physics Database