Measurement E151M1908

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:	0.0374
Q²:	0.0496 GeV²
W:	1655.0 GeV
E_beam:	1.9889 GeV
ε:	0.78

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.35	78.0	0.804	0.8295
0.35	90.0	-0.1699	0.8591
0.35	270.0	0.1627	0.8108
0.45	78.0	0.6354	0.6784
0.45	90.0	-0.9043	0.8959
0.45	138.0	-0.0573	0.8745
0.45	258.0	0.3484	0.8136
0.45	270.0	-0.7103	0.568
0.45	282.0	0.7124	0.7191
0.55	114.0	-1.0405	0.8053
0.55	126.0	0.043	0.8904
0.55	138.0	0.5679	0.7937
0.55	210.0	-0.5295	0.836
0.55	258.0	-0.6549	0.6856
0.55	270.0	-0.2192	0.6094
0.55	282.0	-0.4549	0.7516
0.65	138.0	-0.2551	0.7403
0.65	150.0	-0.45	0.8202
0.65	210.0	-1.6752	0.5562
0.65	222.0	-0.7748	0.667
0.65	234.0	-0.1481	0.7786
0.65	282.0	0.0393	0.8065
0.65	294.0	0.0586	0.7672
0.75	66.0	0.089	0.6963
0.75	78.0	0.0538	0.7516
0.75	138.0	-0.345	0.8688
0.75	198.0	-0.6698	0.6416
0.75	210.0	-0.8566	0.6005
0.75	222.0	-0.5172	0.5371
0.75	234.0	-0.6083	0.7481
0.75	258.0	-0.9261	0.706
0.75	270.0	-0.5448	0.5871
0.75	282.0	0.1694	0.5232
0.75	294.0	-0.5788	0.669
0.85	102.0	0.5159	0.7346
0.85	114.0	0.0303	0.6818
0.85	126.0	-0.6632	0.6992
0.85	198.0	-0.7066	0.6911
0.85	210.0	-0.7639	0.7379
0.85	222.0	-0.6974	0.5745
0.85	234.0	0.8016	0.6264
0.85	246.0	-0.9627	0.6828
0.95	222.0	-0.7455	0.7128

CLAS Physics Database