Measurement E151M2390

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:	0.1279
Q²:	0.2915 GeV²
W:	1775.0 GeV
E_beam:	2.999 GeV
ε:	0.8175

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.75	90.0	1.2513	0.8887
0.85	78.0	-0.2591	1.0708
0.85	90.0	1.1127	0.9945
0.85	102.0	0.1252	1.0078
0.85	186.0	1.173	0.9431
0.85	198.0	1.6626	1.0024
0.85	210.0	-0.2152	0.9714
0.85	222.0	-1.2429	0.9645
0.85	234.0	0.8065	0.8365
0.95	186.0	-0.1455	0.9097
0.95	198.0	-0.0645	1.0197
0.95	210.0	-0.5286	0.9942
0.95	234.0	0.4662	0.7945
0.95	246.0	0.1464	0.7791
0.95	258.0	1.1959	0.9449

CLAS Physics Database