Measurement E151M1794

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:	0.3594
Q²:	0.205 GeV²
W:	1415.0 GeV
E_beam:	1.9889 GeV
ε:	0.8764

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.25	66.0	-0.0149	0.7301
0.25	282.0	0.2216	0.8318
0.25	294.0	-1.2073	0.7499
0.35	66.0	-0.6856	0.7286
0.35	282.0	0.6332	0.7618
0.35	294.0	-0.7397	0.796
0.65	102.0	-0.9688	0.7276
0.65	114.0	1.1316	0.7422
0.65	126.0	-0.621	0.7812
0.65	246.0	0.5094	0.6961
0.65	258.0	-0.2894	0.8639
0.65	270.0	0.1334	0.8533
0.75	90.0	0.3756	0.5988
0.75	102.0	-0.1986	0.7901
0.75	114.0	0.8318	0.5529
0.75	138.0	0.1184	0.7845
0.75	234.0	0.5961	0.7129
0.75	246.0	-0.7865	0.6211
0.75	258.0	-0.2319	0.5781
0.75	270.0	0.702	0.6256
0.75	282.0	1.4304	0.7513
0.85	66.0	0.1949	0.8506
0.85	90.0	0.4674	0.8091
0.85	102.0	-0.3207	0.6287
0.85	114.0	0.2732	0.6778
0.85	126.0	-0.0346	0.6585
0.85	138.0	-0.2848	0.8685
0.85	222.0	1.3432	0.7482
0.85	234.0	0.3669	0.7036
0.85	246.0	0.3865	0.5721
0.85	258.0	-0.4066	0.5847
0.85	270.0	0.8458	0.5638
0.85	282.0	0.7548	0.6009
0.85	294.0	-0.0152	0.8252
0.95	126.0	0.6387	0.7921
0.95	222.0	1.0056	0.6834
0.95	234.0	-0.2991	0.6564
0.95	246.0	-0.8595	0.7203
0.95	258.0	-1.449	0.4632
0.95	270.0	0.8585	0.5451
0.95	282.0	0.0487	0.5066
0.95	294.0	0.1114	0.7175

CLAS Physics Database