Measurement E151M157

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:	0.0849
Q²:	0.0496 GeV²
W:	1415.0 GeV
E_beam:	1.0539 GeV
ε:	0.6673

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_UL	uncertainty
0.25	42.0	1.4452	0.7963
0.25	54.0	-0.4679	0.7666
0.35	42.0	0.1708	0.6308
0.35	54.0	1.3651	0.7732
0.45	30.0	0.7737	0.7733
0.45	42.0	0.8378	0.669
0.45	54.0	-0.3669	0.7031
0.45	246.0	-0.9696	0.729
0.45	258.0	-1.0528	0.6574
0.55	42.0	1.531	0.8986
0.55	54.0	2.4581	0.7859
0.55	222.0	-0.0171	0.6949
0.55	234.0	-0.9171	0.5402
0.55	246.0	-0.8105	0.5264
0.55	258.0	-0.7131	0.5316
0.65	138.0	-0.5073	0.8125
0.65	150.0	-0.5603	0.7794
0.65	162.0	-1.0438	0.6509
0.65	174.0	1.2419	0.8722
0.65	210.0	0.8242	0.8259
0.65	222.0	-1.1434	0.5687
0.65	234.0	0.5572	0.559
0.65	246.0	0.1203	0.4856
0.65	258.0	-0.4063	0.489
0.65	270.0	-0.8429	0.5795
0.75	138.0	-0.4225	0.8014
0.75	150.0	0.1745	0.7013
0.75	162.0	0.6844	0.7636
0.75	174.0	0.157	0.733
0.75	186.0	0.7634	0.7485
0.75	222.0	-0.5611	0.6089
0.75	234.0	2.1388	0.5905
0.75	246.0	0.5397	0.5258
0.75	258.0	0.0224	0.4701
0.75	270.0	-0.7171	0.5653
0.85	138.0	1.969	0.8205
0.85	174.0	-1.0363	0.6688
0.85	222.0	0.4306	0.8108
0.85	234.0	-0.0029	0.4774
0.85	246.0	0.2905	0.4894
0.85	258.0	0.0421	0.4038
0.85	270.0	0.3279	0.5456
0.95	150.0	-0.4001	0.6188
0.95	270.0	0.9369	0.6715

CLAS Physics Database