Measurement E151M697

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:	0.0234
Q²:	0.0348 GeV²
W:	1685.0 GeV
E_beam:	1.9889 GeV
ε:	0.7592

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_UL	uncertainty
0.45	78.0	0.1569	0.5853
0.45	270.0	0.2474	0.6291
0.45	282.0	0.6189	0.57
0.55	102.0	-0.4755	0.5902
0.55	258.0	-1.0023	0.4825
0.55	270.0	0.2425	0.622
0.55	318.0	-0.5236	0.5498
0.65	126.0	0.0273	0.5282
0.65	198.0	1.2934	0.6747
0.65	210.0	1.1183	0.6252
0.65	282.0	-0.8739	0.4367
0.65	294.0	0.1567	0.6337
0.75	66.0	0.1233	0.4974
0.75	78.0	0.186	0.6474
0.75	198.0	0.5514	0.5584
0.75	222.0	0.4185	0.539
0.75	258.0	0.3425	0.6017
0.75	270.0	-0.0569	0.411
0.75	282.0	-0.5033	0.3837
0.85	114.0	0.0159	0.5745
0.85	126.0	-0.3733	0.5191
0.85	138.0	0.02	0.6069
0.85	198.0	0.5923	0.5424
0.85	210.0	0.7859	0.5559
0.85	222.0	-0.6485	0.4428
0.85	270.0	0.8767	0.6258

CLAS Physics Database