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
0.35	78.0	-0.5078	0.7429
0.35	270.0	-0.2505	0.5696
0.45	138.0	-0.2387	0.7327
0.45	222.0	-1.434	0.6632
0.45	270.0	-0.7522	0.6162
0.45	282.0	-0.9298	0.6675
0.55	114.0	-0.8719	0.7203
0.55	126.0	0.496	0.7426
0.55	138.0	-0.7442	0.8363
0.55	210.0	0.0523	0.6935
0.55	222.0	-0.721	0.6736
0.55	246.0	0.0781	0.7334
0.55	258.0	0.0639	0.6488
0.55	270.0	0.0439	0.6055
0.65	126.0	-0.5362	0.6517
0.65	138.0	-0.646	0.6135
0.65	210.0	-0.1294	0.7244
0.65	222.0	-1.2382	0.5853
0.65	234.0	-0.3963	0.7009
0.65	294.0	0.4834	0.652
0.75	54.0	-0.2483	0.7414
0.75	66.0	-0.3672	0.6334
0.75	114.0	-0.0704	0.6509
0.75	198.0	0.5717	0.6791
0.75	210.0	-0.3825	0.6128
0.75	222.0	-0.2237	0.5602
0.75	234.0	-0.5383	0.6743
0.75	270.0	-0.2971	0.5611
0.75	282.0	-0.5992	0.4993
0.85	114.0	-0.3905	0.5901
0.85	126.0	-0.2955	0.5931
0.85	138.0	0.8945	0.6651
0.85	198.0	-0.7393	0.5841
0.85	210.0	-0.1194	0.582
0.85	222.0	-0.2078	0.5207
0.85	234.0	-0.8572	0.607
0.85	270.0	-0.339	0.6888

CLAS Physics Database