Measurement E151M1953

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:	0.4745
Q²:	0.0707 GeV²
W:	1235.0 GeV
E_beam:	2.2596 GeV
ε:	0.9751

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.45	78.0	0.0796	0.4012	0.0375
0.55	78.0	-0.5557	0.4266	0.048
0.65	270.0	0.9399	2.0139	0.0914
0.75	258.0	4.5933	2.1642	0.4232
0.75	270.0	0.3152	2.2863	0.0417
0.85	114.0	0.7512	3.7173	0.0753
0.85	126.0	1.3135	2.6929	0.1244
0.85	138.0	-1.3863	3.3205	0.1309
0.85	150.0	-3.978	3.3779	0.3668
0.95	126.0	-4.314	9.0354	0.3976
0.95	138.0	-5.4101	9.3875	0.4981
0.95	150.0	8.6608	2.0712	0.1523
0.95	162.0	9.412	7.9936	0.8655
0.55	270.0	-0.2728	0.5322	0.0349
0.65	90.0	-0.1529	0.5136	0.0316
0.65	270.0	0.4512	0.4982	0.042
0.75	246.0	0.4414	0.5196	0.0415
0.75	258.0	0.02	0.4584	0.03
0.75	270.0	-0.0086	0.4559	0.03
0.85	126.0	-0.9194	0.4968	0.0669
0.85	138.0	0.2171	0.5084	0.0332
0.85	150.0	-0.7483	0.6388	0.0572
0.85	246.0	0.0205	0.5268	0.03
0.85	258.0	0.1515	0.4749	0.0316
0.95	114.0	-1.7214	0.8737	0.1159
0.95	126.0	0.0212	0.9732	0.03
0.95	150.0	1.0958	0.7674	0.0773
0.95	162.0	-1.0667	0.8678	0.0756
0.95	174.0	-1.0546	1.0504	0.0749
0.95	186.0	-0.8757	1.0032	0.0644

CLAS Physics Database