Measurement E151M693

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:	0.1061
Q²:	0.1715 GeV²
W:	1655.0 GeV
E_beam:	1.9889 GeV
ε:	0.7242

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_UL	uncertainty	syst. uncert.
0.65	282.0	-0.5437	0.6424	0.0448
0.65	294.0	-0.1493	0.6879	0.0314
0.75	138.0	-1.149	0.5914	0.0764
0.75	222.0	-0.3742	0.6811	0.0377
0.75	246.0	0.033	0.6439	0.0301
0.85	102.0	0.4648	0.6689	0.0413
0.85	114.0	-0.7645	0.6138	0.0556
0.85	210.0	-0.3364	0.6674	0.0364
0.85	222.0	0.4557	0.6835	0.0409
0.85	234.0	-0.0149	0.668	0.03
0.85	246.0	1.51	0.7059	0.0971

CLAS Physics Database