Measurement E151M1414

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:	0.0395
Q²:	0.0348 GeV²
W:	1475.0 GeV
E_beam:	1.0539 GeV
ε:	0.5694

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.25	42.0	-0.8397	0.7842
0.25	54.0	-0.1192	0.6737
0.35	42.0	0.29	0.7527
0.35	54.0	-0.2357	0.7361
0.35	66.0	-2.0953	0.6956
0.45	30.0	-0.4162	0.8753
0.45	42.0	-0.8673	0.6665
0.45	54.0	0.1518	0.6632
0.45	66.0	0.8645	0.8511
0.45	234.0	-0.8678	0.7311
0.45	246.0	1.5048	0.6454
0.45	258.0	0.8689	0.7762
0.55	42.0	-0.3081	0.7699
0.55	54.0	1.3887	0.6914
0.55	162.0	-0.977	0.867
0.55	174.0	1.2896	0.6493
0.55	198.0	0.3172	0.9145
0.55	222.0	-0.5767	0.7081
0.55	234.0	-1.2651	0.565
0.55	246.0	-1.2492	0.5192
0.55	258.0	-0.954	0.646
0.65	162.0	-0.6379	0.7295
0.65	174.0	1.4476	0.75
0.65	222.0	-0.905	0.6221
0.65	234.0	-0.3613	0.6218
0.65	246.0	0.01	0.5795
0.65	258.0	-0.5919	0.5197
0.75	174.0	-0.3535	0.7655
0.75	186.0	0.1565	0.7619
0.75	222.0	-1.1991	0.6998
0.75	234.0	1.5215	0.5164
0.75	246.0	0.4236	0.5583
0.75	258.0	-0.8347	0.5736
0.75	270.0	0.9566	0.793
0.85	222.0	0.2165	0.7592
0.85	234.0	1.0408	0.5089
0.85	246.0	-0.5088	0.5207
0.85	258.0	0.6661	0.549

CLAS Physics Database