Measurement E151M559

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:	0.538
Q²:	0.348 GeV²
W:	1385.0 GeV
E_beam:	1.9889 GeV
ε:	0.8431

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_UL	uncertainty	syst. uncert.
0.65	258.0	-0.4463	0.6445	0.0406
0.75	90.0	-0.1354	0.5955	0.0311
0.75	102.0	-0.2065	0.6337	0.0326
0.75	246.0	-0.2503	0.675	0.0337
0.75	258.0	-0.4563	0.6373	0.041
0.75	282.0	0.0544	0.6544	0.0302
0.85	102.0	-0.3388	0.582	0.0365
0.85	114.0	0.7067	0.6716	0.0526
0.85	126.0	0.0908	0.6944	0.0305
0.85	210.0	-0.13	0.6795	0.031
0.85	234.0	0.2171	0.6946	0.0328
0.85	246.0	0.0101	0.5714	0.03
0.85	258.0	0.3393	0.6258	0.0365
0.85	270.0	1.3973	0.6991	0.0906
0.85	282.0	-0.2703	0.6081	0.0343
0.85	294.0	-0.5066	0.5571	0.0431
0.95	246.0	-0.6123	0.5299	0.048
0.95	270.0	0.3848	0.657	0.0381
0.95	282.0	-1.0764	0.3998	0.0724
0.95	294.0	-0.3956	0.5028	0.0385
0.95	306.0	-0.4772	0.3939	0.0419

CLAS Physics Database