Measurement E151M486

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:	0.2087
Q²:	0.0348 GeV²
W:	1265.0 GeV
E_beam:	1.9889 GeV
ε:	0.9697

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_UL	uncertainty	syst. uncert.
0.55	90.0	0.5737	0.5917	0.0462
0.65	258.0	-0.3153	0.5429	0.0357
0.75	246.0	-0.3336	0.4588	0.0363
0.75	258.0	0.1678	0.5204	0.0317
0.75	270.0	0.9231	0.6513	0.0639
0.85	126.0	0.259	0.5957	0.0339
0.85	138.0	0.0158	0.5876	0.03
0.85	162.0	0.8788	0.6273	0.0616
0.85	246.0	0.2099	0.5757	0.0326

CLAS Physics Database