Measurement E151M1200

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:	0.0625
Q²:	0.1715 GeV²
W:	1865.0 GeV
E_beam:	2.999 GeV
ε:	0.7939

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_UL	uncertainty	syst. uncert.
0.65	282.0	-0.1148	0.8509	0.0312
0.85	90.0	-0.3169	0.8901	0.0379
0.85	102.0	0.1527	0.8312	0.032
0.85	114.0	0.0361	0.8536	0.0301
0.85	198.0	-0.2259	0.7416	0.0342
0.85	210.0	-0.6099	0.8529	0.0537
0.85	222.0	-0.3883	0.8214	0.0413

CLAS Physics Database