Measurement E151M2142

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:	0.0354
Q²:	0.0496 GeV²
W:	1685.0 GeV
E_beam:	2.2596 GeV
ε:	0.8174

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.45	270.0	-0.0106	0.6089	0.0445
0.55	258.0	3.7228	1.6845	0.3434
0.65	126.0	-0.7277	2.2992	0.0733
0.75	210.0	-1.7535	1.9628	0.1639
0.75	222.0	-1.7436	2.0741	0.163
0.75	270.0	-1.5171	1.9842	0.1426
0.75	282.0	-0.945	1.5293	0.0919
0.85	210.0	0.5571	1.8742	0.0593
0.85	234.0	-4.4643	1.8346	0.4114
0.45	282.0	-1.0221	0.5962	0.0729
0.55	114.0	-1.3079	0.583	0.0902
0.55	270.0	-1.0194	0.6935	0.0728
0.55	282.0	0.0486	0.6532	0.0302
0.65	114.0	-1.6994	0.6199	0.1145
0.65	126.0	-1.1887	0.5893	0.0829
0.65	138.0	-0.1034	0.7331	0.0307
0.65	210.0	0.4417	0.7286	0.0415
0.65	222.0	-0.4058	0.7219	0.04
0.75	198.0	-0.0507	0.7915	0.0302
0.75	210.0	-1.3874	0.7995	0.0951
0.75	222.0	-1.2403	0.6885	0.0861
0.75	270.0	-0.5146	0.6128	0.045
0.75	282.0	-0.6841	0.5509	0.0537
0.85	114.0	1.4765	0.7413	0.1006
0.85	126.0	0.6562	0.7273	0.0522
0.85	210.0	-0.1496	0.7489	0.0315
0.85	222.0	-0.1531	0.8237	0.0316

CLAS Physics Database