Measurement E151M1680

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:	0.0167
Q²:	0.0291 GeV²
W:	1625.0 GeV
E_beam:	1.3383 GeV
ε:	0.5197

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.85	234.0	0.3779	0.8918
0.75	234.0	0.7448	1.1373
0.85	222.0	-1.0955	1.0622
0.85	246.0	-1.2698	1.0735

CLAS Physics Database