Measurement E151M1921

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:	0.0326
Q²:	0.0496 GeV²
W:	1685.0 GeV
E_beam:	1.9889 GeV
ε:	0.7523

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.35	78.0	-0.5078	0.7429	0.043
0.35	270.0	-0.2505	0.5696	0.0336
0.45	138.0	-0.2387	0.7327	0.0333
0.45	222.0	-1.434	0.6632	0.0919
0.45	270.0	-0.7522	0.6162	0.0546
0.45	282.0	-0.9298	0.6675	0.0638
0.55	114.0	-0.8719	0.7203	0.0608
0.55	126.0	0.496	0.7426	0.0425
0.55	138.0	-0.7442	0.8363	0.0542
0.55	210.0	0.0523	0.6935	0.0302
0.55	222.0	-0.721	0.6736	0.053
0.55	246.0	0.0781	0.7334	0.0304
0.55	258.0	0.0639	0.6488	0.0302
0.55	270.0	0.0439	0.6055	0.0301
0.65	126.0	-0.5362	0.6517	0.0442
0.65	138.0	-0.646	0.6135	0.0493
0.65	210.0	-0.1294	0.7244	0.031
0.65	222.0	-1.2382	0.5853	0.0808
0.65	234.0	-0.3963	0.7009	0.0384
0.65	294.0	0.4834	0.652	0.0419
0.75	54.0	-0.2483	0.7414	0.0336
0.75	66.0	-0.3672	0.6334	0.0374
0.75	114.0	-0.0704	0.6509	0.0303
0.75	198.0	0.5717	0.6791	0.0458
0.75	210.0	-0.3825	0.6128	0.0379
0.75	222.0	-0.2237	0.5602	0.0329
0.75	234.0	-0.5383	0.6743	0.0443
0.75	270.0	-0.2971	0.5611	0.035
0.75	282.0	-0.5992	0.4993	0.0471
0.85	114.0	-0.3905	0.5901	0.0382
0.85	126.0	-0.2955	0.5931	0.0349
0.85	138.0	0.8945	0.6651	0.0619
0.85	198.0	-0.7393	0.5841	0.0539
0.85	210.0	-0.1194	0.582	0.0309
0.85	222.0	-0.2078	0.5207	0.0325
0.85	234.0	-0.8572	0.607	0.06
0.85	270.0	-0.339	0.6888	0.0364

CLAS Physics Database