Measurement E151M1882

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:	0.0922
Q²:	0.101 GeV²
W:	1595.0 GeV
E_beam:	1.9889 GeV
ε:	0.8071

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.35	270.0	-0.9689	0.8601	0.0659
0.65	114.0	-0.9506	0.8612	0.0649
0.65	126.0	0.4536	0.8582	0.0407
0.65	138.0	-1.0555	0.9238	0.0706
0.65	210.0	-0.6361	0.8349	0.0488
0.65	222.0	0.9484	0.84	0.0648
0.65	282.0	0.4169	0.893	0.0392
0.65	294.0	0.0077	0.9453	0.03
0.75	114.0	0.3765	0.898	0.0377
0.75	126.0	0.009	0.9421	0.03
0.75	138.0	-0.1603	0.9272	0.0315
0.75	210.0	-1.5129	0.8012	0.0965
0.75	222.0	0.8017	0.7478	0.0571
0.75	234.0	-0.2508	0.8502	0.0336
0.75	282.0	0.7819	0.7564	0.0561
0.75	294.0	-0.9726	0.7304	0.0661
0.85	102.0	-0.118	0.7893	0.0308
0.85	114.0	0.2955	0.8507	0.0349
0.85	210.0	-0.125	0.7183	0.0309
0.85	222.0	-1.5351	0.6175	0.0977
0.85	234.0	0.0887	0.6698	0.0305
0.85	246.0	-0.5817	0.7176	0.0463
0.95	126.0	-1.3293	0.718	0.086
0.95	234.0	0.8542	0.7798	0.0598
0.95	246.0	1.1358	0.7077	0.0751

CLAS Physics Database