Measurement E151M2391

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:	0.1438
Q²:	0.348 GeV²
W:	1775.0 GeV
E_beam:	2.999 GeV
ε:	0.8046

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.85	78.0	-0.6596	0.8765	0.0565
0.85	90.0	1.1392	0.9495	0.0879
0.85	102.0	-1.4988	1.0011	0.1127
0.85	186.0	-2.1321	1.1025	0.1575
0.85	198.0	0.9031	1.0831	0.072
0.95	234.0	-1.2083	0.8682	0.0926
0.95	246.0	0.0596	0.7978	0.0303
0.95	258.0	-0.4461	0.9194	0.0441

CLAS Physics Database