Measurement E151M1880

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:	0.0679
Q²:	0.0707 GeV²
W:	1595.0 GeV
E_beam:	1.9889 GeV
ε:	0.8195

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.35	270.0	0.8821	0.826	0.0613
0.35	282.0	0.5604	0.8047	0.0453
0.45	78.0	0.9344	0.8842	0.0641
0.45	126.0	-0.1411	0.9972	0.0312
0.45	270.0	0.5826	0.7144	0.0463
0.45	282.0	-0.3596	0.8935	0.0371
0.55	114.0	0.9742	0.9232	0.0662
0.55	126.0	-1.6671	0.785	0.1054
0.55	210.0	-0.398	0.9556	0.0385
0.55	258.0	0.3268	0.9388	0.0359
0.55	270.0	-1.2488	0.8139	0.0814
0.55	282.0	0.1314	0.802	0.031
0.65	114.0	1.8148	0.7068	0.114
0.65	126.0	-0.6997	0.8177	0.0519
0.65	138.0	-1.4833	0.6983	0.0948
0.65	210.0	-1.3276	0.764	0.0859
0.65	234.0	-1.0403	0.7768	0.0698
0.65	282.0	1.4275	0.7594	0.0916
0.65	294.0	-0.214	0.8073	0.0327
0.75	66.0	-1.213	0.8674	0.0794
0.75	126.0	-1.0811	0.8701	0.0721
0.75	138.0	0.2471	0.7451	0.0335
0.75	198.0	-1.4496	0.7501	0.0928
0.75	210.0	0.6814	0.9158	0.051
0.75	222.0	-0.7293	0.732	0.0534
0.75	234.0	0.8333	0.7254	0.0587
0.75	246.0	0.4195	0.8132	0.0393
0.75	270.0	-0.446	0.776	0.0404
0.75	282.0	-1.0622	0.7065	0.071
0.75	294.0	-1.1406	0.6539	0.0753
0.85	102.0	-0.2058	0.7581	0.0325
0.85	114.0	-0.2591	0.8925	0.0339
0.85	126.0	0.4894	0.9563	0.0422
0.85	198.0	0.2541	0.8544	0.0337
0.85	210.0	-0.8162	0.6985	0.0578
0.85	222.0	-0.7465	0.6553	0.0543
0.85	234.0	-1.4071	0.6257	0.0904
0.85	246.0	-2.0541	0.6562	0.128
0.95	234.0	0.8033	0.7789	0.0572
0.95	246.0	-0.1541	0.7976	0.0314

CLAS Physics Database