Measurement E151M1839

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:	0.2096
Q²:	0.1715 GeV²
W:	1505.0 GeV
E_beam:	1.9889 GeV
ε:	0.8405

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.25	66.0	0.2555	0.7743
0.25	282.0	-0.911	0.6438
0.35	66.0	0.8365	0.7445
0.35	78.0	0.118	0.7887
0.35	282.0	-0.0311	0.6638
0.35	294.0	-0.4089	0.8061
0.45	66.0	1.4028	0.758
0.45	282.0	-0.2385	0.6657
0.45	294.0	1.0551	0.6572
0.55	102.0	-1.4497	0.63
0.55	114.0	-0.7051	0.7678
0.55	126.0	0.2943	0.8188
0.55	246.0	0.3649	0.7266
0.55	282.0	-0.2309	0.786
0.65	102.0	-0.0848	0.6598
0.65	114.0	0.0082	0.5797
0.65	126.0	0.4692	0.7758
0.65	138.0	-0.3823	0.7643
0.65	222.0	-0.7521	0.6828
0.65	234.0	-0.3851	0.6928
0.65	246.0	-0.0499	0.7929
0.65	294.0	-0.5402	0.6268
0.65	306.0	0.9269	0.6952
0.75	102.0	-0.0847	0.5256
0.75	114.0	-0.0815	0.5322
0.75	126.0	-0.4316	0.6999
0.75	138.0	-0.9437	0.8743
0.75	150.0	0.395	0.8062
0.75	210.0	-0.6496	0.7032
0.75	222.0	-0.0461	0.6723
0.75	234.0	1.5816	0.5811
0.75	246.0	0.1483	0.5401
0.75	258.0	1.1472	0.587
0.85	78.0	0.1138	0.7679
0.85	90.0	-0.6607	0.7404
0.85	102.0	-0.5763	0.7372
0.85	114.0	0.0219	0.7572
0.85	126.0	0.3158	0.744
0.85	138.0	0.1766	0.6313
0.85	198.0	0.9157	0.6673
0.85	210.0	-0.5386	0.6532
0.85	222.0	-1.1414	0.5872
0.85	234.0	-0.0547	0.56
0.85	246.0	-0.6376	0.4638
0.85	258.0	-0.2446	0.5486
0.85	270.0	-0.572	0.5856
0.95	90.0	-1.256	0.6189
0.95	222.0	-0.4875	0.6593
0.95	234.0	0.2671	0.5642
0.95	246.0	-0.3804	0.6368
0.95	258.0	0.5921	0.5549
0.95	270.0	1.0345	0.6032
0.95	282.0	-0.381	0.637

CLAS Physics Database