Measurement E151M2100

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:	0.1483
Q²:	0.1435 GeV²
W:	1565.0 GeV
E_beam:	2.2596 GeV
ε:	0.8604

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.65	234.0	-0.1199	0.8982	0.032
0.75	114.0	0.8045	0.8866	0.0798
0.75	210.0	0.3724	0.7921	0.0455
0.75	222.0	-0.2685	0.8646	0.0388
0.85	90.0	1.1041	1.0863	0.1058
0.85	222.0	-0.2201	0.978	0.0362
0.85	234.0	1.1242	0.8947	0.1076
0.85	246.0	0.4806	0.9726	0.0534
0.85	258.0	-0.0992	0.9682	0.0314
0.55	126.0	-0.2039	0.8439	0.0328
0.65	102.0	-1.1136	0.8348	0.0784
0.65	126.0	-0.1258	0.8177	0.0311
0.75	114.0	-0.3264	0.9732	0.0368
0.75	222.0	-1.3655	0.9598	0.0938
0.75	234.0	-0.036	0.9922	0.0301
0.75	294.0	1.2457	0.7735	0.0864
0.85	210.0	-0.4945	1.0612	0.044
0.85	222.0	-1.4666	0.9496	0.1
0.85	234.0	-0.7217	0.8339	0.0557
0.85	246.0	-1.6636	0.833	0.1123
0.85	258.0	0.236	1.0231	0.0337
0.95	246.0	1.4325	1.4936	0.0979
0.95	258.0	-1.3067	1.3309	0.0901

CLAS Physics Database