Measurement E151M1764

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:	0.5316
Q²:	0.2445 GeV²
W:	1355.0 GeV
E_beam:	1.9889 GeV
ε:	0.8892

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.35	66.0	0.0147	0.6043	0.03
0.55	270.0	-0.3359	0.7911	0.0363
0.65	102.0	0.3886	0.6928	0.0381
0.65	270.0	0.9338	0.6884	0.064
0.75	78.0	-0.5371	0.7586	0.0443
0.75	90.0	1.5382	0.5697	0.0979
0.75	102.0	0.1753	0.5614	0.0318
0.75	114.0	0.2569	0.7345	0.0338
0.75	234.0	0.2311	0.7758	0.0331
0.75	246.0	-0.2937	0.7149	0.0349
0.75	258.0	-1.2254	0.5437	0.0801
0.75	270.0	-0.9414	0.5498	0.0645
0.75	282.0	-0.7436	0.6192	0.0541
0.75	294.0	0.8066	0.6011	0.0574
0.85	90.0	0.9428	0.5081	0.0645
0.85	102.0	-1.0233	0.4888	0.0689
0.85	114.0	0.1667	0.6232	0.0317
0.85	126.0	1.1915	0.6981	0.0782
0.85	138.0	0.265	0.7128	0.034
0.85	222.0	0.9622	0.7014	0.0656
0.85	234.0	0.924	0.6037	0.0635
0.85	246.0	-0.5858	0.5584	0.0465
0.85	258.0	-0.188	0.6124	0.0321
0.85	270.0	-0.072	0.6698	0.0303
0.85	282.0	0.1337	0.5225	0.0311
0.85	294.0	-0.4277	0.5156	0.0396
0.85	306.0	-0.3546	0.7458	0.0369
0.95	102.0	1.1022	0.6531	0.0732
0.95	114.0	0.1187	0.66	0.0308
0.95	126.0	0.9289	0.6187	0.0638
0.95	246.0	-0.0437	0.6428	0.0301
0.95	258.0	0.289	0.4784	0.0347
0.95	270.0	-0.0666	0.6207	0.0303
0.95	282.0	0.1285	0.5415	0.031
0.95	294.0	0.6493	0.6171	0.0495

CLAS Physics Database