Measurement E151M526

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:	0.5639
Q²:	0.205 GeV²
W:	1325.0 GeV
E_beam:	1.9889 GeV
ε:	0.9114

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_UL	uncertainty
0.25	66.0	2.0096	2.0096
0.35	66.0	1.4781	0.668
0.35	78.0	0.1045	0.5679
0.45	78.0	0.6831	0.6895
0.55	270.0	0.1997	0.5099
0.65	102.0	-0.3181	0.6147
0.65	258.0	0.1239	0.5758
0.65	270.0	-1.1101	0.3638
0.65	282.0	0.7323	0.6334
0.75	78.0	-0.1563	0.5089
0.75	90.0	0.1009	0.4805
0.75	102.0	-0.1815	0.4402
0.75	114.0	0.1765	0.5054
0.75	246.0	-0.2929	0.4472
0.75	258.0	0.6791	0.5068
0.75	270.0	0.2554	0.4651
0.75	282.0	0.6638	0.4747
0.75	294.0	0.1394	0.5005
0.85	90.0	-0.084	0.4148
0.85	102.0	0.1943	0.376
0.85	114.0	0.2109	0.4242
0.85	126.0	-0.1304	0.4874
0.85	150.0	0.1876	0.6506
0.85	222.0	0.2107	0.4976
0.85	234.0	-0.0279	0.481
0.85	246.0	0.2277	0.4911
0.85	258.0	0.6536	0.4959
0.85	270.0	0.4478	0.4621
0.85	282.0	0.2912	0.4221
0.85	294.0	0.2123	0.3992
0.95	90.0	-0.0264	0.5288
0.95	102.0	0.2308	0.4288
0.95	114.0	-0.3575	0.3986
0.95	126.0	-0.1946	0.4455
0.95	138.0	-0.1944	0.5114
0.95	150.0	1.0493	0.6634
0.95	246.0	-0.3583	0.4628
0.95	258.0	-0.1156	0.4193
0.95	270.0	0.8138	0.4444
0.95	282.0	-0.1691	0.4497
0.95	294.0	0.5953	0.4507

CLAS Physics Database