Measurement E151M2245

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:	0.1991
Q²:	0.101 GeV²
W:	1445.0 GeV
E_beam:	2.999 GeV
ε:	0.9591

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.35	78.0	-0.9051	0.9044	0.0722
0.75	102.0	0.0645	0.8816	0.0304
0.75	246.0	0.446	0.9252	0.0441
0.75	258.0	0.8735	0.994	0.0701
0.85	126.0	-0.2191	1.0083	0.0339
0.85	246.0	0.5136	1.0228	0.0478

CLAS Physics Database