Measurement E151M1202

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:	0.0827
Q²:	0.2445 GeV²
W:	1865.0 GeV
E_beam:	2.999 GeV
ε:	0.7757

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_UL	uncertainty
0.85	90.0	-0.9667	0.7075
0.85	186.0	-0.294	0.8627
0.85	210.0	-0.9105	0.6984
0.95	222.0	1.6502	1.002

CLAS Physics Database