Measurement E151M1795

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_LL
ε_L:	0.3982
Q²:	0.2445 GeV²
W:	1415.0 GeV
E_beam:	1.9889 GeV
ε:	0.8633

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.35	66.0	-0.5931	0.8494	0.0468
0.35	294.0	-1.315	0.6927	0.0851
0.55	102.0	2.8568	2.8568	0.1757
0.65	90.0	0.576	0.8261	0.046
0.65	102.0	-1.4036	0.6337	0.0902
0.65	114.0	0.9422	0.7815	0.0645
0.65	246.0	-0.1311	0.7928	0.031
0.65	270.0	0.5901	0.6572	0.0467
0.75	90.0	0.1786	0.7386	0.0319
0.75	102.0	-0.2502	0.8591	0.0336
0.75	114.0	-0.3982	0.743	0.0385
0.75	126.0	1.1747	0.7901	0.0772
0.75	138.0	0.6661	0.8809	0.0503
0.75	234.0	0.2695	0.6901	0.0342
0.75	246.0	-0.748	0.6429	0.0544
0.75	258.0	-0.4404	0.6499	0.0402
0.75	270.0	0.6285	0.677	0.0485
0.75	282.0	-0.8086	0.7389	0.0575
0.85	66.0	-0.9679	0.7599	0.0659
0.85	90.0	1.5179	0.7918	0.0967
0.85	102.0	0.6752	0.6811	0.0507
0.85	114.0	-0.3012	0.6778	0.0351
0.85	126.0	-0.064	0.7642	0.0302
0.85	138.0	1.1537	0.718	0.0761
0.85	222.0	0.0423	0.8273	0.0301
0.85	234.0	0.2953	0.6598	0.0349
0.85	246.0	-0.1328	0.6545	0.0311
0.85	258.0	1.0804	0.6085	0.072
0.85	270.0	0.3257	0.6583	0.0359
0.85	282.0	0.5849	0.6035	0.0464
0.85	294.0	0.2329	0.687	0.0332
0.95	66.0	2.099	2.099	0.1307
0.95	234.0	-0.2074	0.639	0.0325
0.95	246.0	0.2033	0.7048	0.0324
0.95	258.0	0.1742	0.6036	0.0318
0.95	282.0	-0.323	0.5734	0.0358
0.95	294.0	0.631	0.6075	0.0486

CLAS Physics Database