Measurement E151M632

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:	0.1828
Q²:	0.1715 GeV²
W:	1535.0 GeV
E_beam:	1.9889 GeV
ε:	0.8214

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_UL	uncertainty	syst. uncert.
0.25	66.0	1.0333	0.7861	0.07
0.35	294.0	0.5647	0.8084	0.0458
0.45	282.0	1.2264	0.7777	0.0808
0.55	114.0	-1.0072	0.6794	0.0685
0.55	270.0	-0.2415	0.7396	0.0334
0.55	282.0	-0.0911	0.6435	0.0305
0.65	114.0	0.0556	0.5863	0.0302
0.65	126.0	-0.6599	0.7059	0.0503
0.65	222.0	0.6739	0.579	0.051
0.65	234.0	0.1146	0.6184	0.0308
0.65	246.0	-0.5835	0.6272	0.0466
0.65	294.0	-0.5502	0.5933	0.0451
0.75	102.0	-0.6296	0.5749	0.0488
0.75	114.0	1.0582	0.657	0.0713
0.75	126.0	-0.2773	0.6609	0.0345
0.75	138.0	-0.3352	0.6735	0.0363
0.75	210.0	1.7713	0.7407	0.1124
0.75	222.0	1.2032	0.7892	0.0795
0.75	234.0	1.599	0.6077	0.1023
0.75	246.0	0.8127	0.5767	0.0581
0.75	258.0	0.3415	0.6188	0.0366
0.85	78.0	-0.621	0.7027	0.0484
0.85	90.0	1.2488	0.6597	0.0821
0.85	114.0	-0.0096	0.7669	0.03
0.85	138.0	-1.6475	0.4845	0.1051
0.85	210.0	0.6508	0.6725	0.0498
0.85	222.0	1.5846	0.5968	0.1015
0.85	234.0	1.4061	0.5348	0.0911
0.85	246.0	0.1771	0.6602	0.0319
0.85	258.0	0.3253	0.526	0.036
0.95	90.0	-0.2246	0.6037	0.033
0.95	198.0	0.4545	0.7298	0.0409
0.95	222.0	0.8012	0.7581	0.0575
0.95	246.0	0.8599	0.5578	0.0605
0.95	258.0	-0.7794	0.4523	0.0563
0.95	270.0	-0.0481	0.5071	0.0301

CLAS Physics Database