Measurement E151M589

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:	0.3463
Q²:	0.2445 GeV²
W:	1445.0 GeV
E_beam:	1.9889 GeV
ε:	0.8482

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_UL	uncertainty
0.15	66.0	0.1709	0.7906
0.35	66.0	1.0341	0.6833
0.35	282.0	-1.0215	0.5818
0.35	294.0	-1.1986	0.5384
0.55	114.0	1.5823	0.8187
0.65	102.0	-0.761	0.5278
0.65	114.0	-1.5132	0.4179
0.65	258.0	1.5535	0.749
0.75	90.0	-0.1922	0.5421
0.75	102.0	0.4934	0.6154
0.75	114.0	0.3338	0.6731
0.75	126.0	-0.5189	0.6636
0.75	234.0	0.1861	0.65
0.75	246.0	0.8343	0.7309
0.75	258.0	0.375	0.6649
0.75	270.0	0.0651	0.5745
0.85	66.0	1.5744	0.7566
0.85	78.0	0.8174	0.6898
0.85	90.0	-0.4017	0.6962
0.85	102.0	-0.5497	0.6862
0.85	114.0	-0.443	0.5614
0.85	126.0	0.5235	0.6886
0.85	210.0	0.5876	0.7705
0.85	234.0	0.4167	0.657
0.85	246.0	-0.2545	0.6019
0.85	258.0	0.9011	0.549
0.85	270.0	0.1528	0.6243
0.85	282.0	1.4493	0.5698
0.95	234.0	-0.1391	0.6368
0.95	258.0	0.4627	0.6205
0.95	270.0	-0.1791	0.5311
0.95	282.0	-0.8385	0.472
0.95	294.0	-0.1182	0.5448

CLAS Physics Database