Measurement E151M2143

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:	0.0417
Q²:	0.0593 GeV²
W:	1685.0 GeV
E_beam:	2.2596 GeV
ε:	0.8141

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.55	126.0	1.853	2.1647	0.1729
0.55	222.0	2.6788	1.7889	0.248
0.65	126.0	-3.1633	2.0661	0.2923
0.65	222.0	-2.5839	1.9319	0.2394
0.75	198.0	-1.4904	2.0834	0.1402
0.75	210.0	-2.4446	1.8207	0.2267
0.75	222.0	-1.6343	2.0348	0.1532
0.75	270.0	-0.9838	1.7648	0.0953
0.75	282.0	-2.3565	1.5956	0.2186
0.85	126.0	0.2064	2.4259	0.0355
0.85	210.0	4.1785	2.1701	0.3852
0.85	270.0	-3.3951	1.8123	0.3135
0.45	270.0	-0.2115	0.694	0.033
0.65	126.0	0.4518	0.7738	0.042
0.65	210.0	-1.4273	0.6603	0.0976
0.65	282.0	-0.8193	0.5811	0.0612
0.75	198.0	-0.007	0.8503	0.03
0.75	210.0	-0.3354	0.7289	0.0371
0.75	222.0	-0.7264	0.7194	0.056
0.75	270.0	1.218	0.6135	0.0847
0.75	282.0	-0.6518	0.5985	0.0519
0.85	114.0	-0.5517	0.6708	0.0468
0.85	234.0	-0.4673	0.7536	0.0427

CLAS Physics Database