Measurement E151M1852

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:	0.1401
Q²:	0.1205 GeV²
W:	1535.0 GeV
E_beam:	1.9889 GeV
ε:	0.8411

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.25	66.0	0.6086	0.8928
0.25	78.0	-0.0002	0.9075
0.25	294.0	1.7235	0.8205
0.35	66.0	-1.7621	0.8411
0.35	282.0	-0.5997	0.7139
0.45	78.0	0.4871	0.8041
0.45	114.0	0.7928	0.7871
0.45	270.0	0.516	0.7298
0.45	282.0	-0.0134	0.6954
0.45	294.0	-0.0471	0.842
0.55	114.0	-0.0149	0.7911
0.55	234.0	-0.4201	0.7813
0.55	246.0	0.8042	0.8265
0.55	270.0	-1.5992	0.8303
0.55	282.0	-0.286	0.8048
0.65	66.0	-0.6888	0.7598
0.65	102.0	-0.373	0.8267
0.65	114.0	-1.3636	0.6737
0.65	126.0	-1.3462	0.6833
0.65	138.0	-0.2837	0.9416
0.65	150.0	-0.5093	0.9348
0.65	198.0	1.1238	0.8965
0.65	210.0	0.5806	0.8787
0.65	222.0	-0.5266	0.7384
0.65	234.0	0.969	0.6301
0.65	246.0	-0.0097	0.8572
0.65	294.0	0.8636	0.7309
0.75	102.0	0.0648	0.9274
0.75	114.0	-0.25	0.7353
0.75	126.0	-0.8639	0.7077
0.75	138.0	0.0439	0.678
0.75	150.0	0.7684	0.9025
0.75	198.0	0.899	0.7291
0.75	210.0	-0.8607	0.6464
0.75	222.0	-1.1107	0.5734
0.75	234.0	-0.8195	0.5645
0.75	246.0	0.4186	0.7818
0.75	258.0	-0.1166	0.8456
0.75	282.0	0.6479	0.8359
0.75	294.0	-1.0569	0.7438
0.85	90.0	0.9154	0.5996
0.85	102.0	-1.4084	0.7667
0.85	138.0	0.0071	0.9079
0.85	198.0	-0.8812	0.7599
0.85	210.0	0.0959	0.663
0.85	222.0	1.1327	0.6971
0.85	234.0	1.1679	0.5621
0.85	246.0	-0.7655	0.5659
0.85	258.0	0.5409	0.7363
0.85	270.0	-0.6345	0.8037
0.95	102.0	1.1171	0.7186
0.95	114.0	1.4457	0.6267
0.95	198.0	0.3674	0.8411
0.95	210.0	-0.9144	0.721
0.95	222.0	-0.3597	0.6351
0.95	234.0	-0.7821	0.5728
0.95	246.0	0.3893	0.6192
0.95	258.0	0.1352	0.5888

CLAS Physics Database