Measurement E151M544

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:	0.618
Q²:	0.348 GeV²
W:	1355.0 GeV
E_beam:	1.9889 GeV
ε:	0.8569

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_UL	uncertainty	syst. uncert.
0.65	102.0	0.6457	0.6721	0.0496
0.65	270.0	-0.7311	0.5256	0.0538
0.75	78.0	0.1875	0.663	0.0321
0.75	90.0	0.5047	0.6815	0.043
0.75	102.0	0.1854	0.6188	0.0321
0.75	294.0	0.7325	0.6679	0.0539
0.85	90.0	0.3057	0.6942	0.0354
0.85	102.0	-0.6823	0.4955	0.0514
0.85	222.0	-0.1852	0.6048	0.0321
0.85	234.0	0.3783	0.6526	0.0379
0.85	270.0	1.091	0.6479	0.0732
0.85	282.0	-0.4247	0.5525	0.0397
0.85	294.0	0.6684	0.6003	0.0507
0.95	234.0	-0.8213	0.4906	0.0585
0.95	294.0	-0.3764	0.5205	0.0378

CLAS Physics Database