Measurement E151M400

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:	0.1347
Q²:	0.1435 GeV²
W:	1505.0 GeV
E_beam:	1.3383 GeV
ε:	0.6226

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_UL	uncertainty	syst. uncert.
0.75	138.0	-0.1323	0.6069	0.0311
0.85	246.0	0.9583	0.5703	0.0665
0.85	270.0	0.7151	0.6041	0.0535

CLAS Physics Database