Measurement E151M1213

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_UL
ε_L:	0.0232
Q²:	0.0707 GeV²
W:	1925.0 GeV
E_beam:	2.999 GeV
ε:	0.78

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_UL	uncertainty
0.75	186.0	-1.6643	0.6718
0.85	114.0	0.3105	0.7713
0.85	126.0	-1.247	0.741
0.85	198.0	-0.3461	0.8375

CLAS Physics Database