Measurement E151M1881

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:	0.0792
Q²:	0.0844 GeV²
W:	1595.0 GeV
E_beam:	1.9889 GeV
ε:	0.8139

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.45	78.0	0.6001	0.9446	0.0471
0.45	282.0	0.7608	0.909	0.055
0.55	222.0	0.8554	0.8925	0.0599
0.55	270.0	0.7052	0.8073	0.0522
0.55	282.0	-0.1363	0.9335	0.0311
0.65	126.0	1.1609	0.8687	0.0765
0.65	150.0	1.0123	0.8747	0.0683
0.65	198.0	0.055	1.0071	0.0302
0.65	210.0	0.7609	0.9671	0.055
0.65	222.0	-0.7104	0.7255	0.0525
0.65	294.0	0.5606	0.7555	0.0453
0.75	126.0	-0.511	0.8484	0.0431
0.75	138.0	0.2778	0.8917	0.0344
0.75	210.0	1.2553	0.8756	0.0818
0.75	222.0	1.156	0.9119	0.0762
0.75	234.0	-1.1135	0.6409	0.0738
0.75	246.0	0.5195	0.9325	0.0435
0.75	270.0	0.5278	0.8609	0.0439
0.75	282.0	-0.885	0.6856	0.0614
0.75	294.0	0.1947	0.7126	0.0322
0.85	102.0	-0.6755	0.8443	0.0507
0.85	114.0	-1.46	0.8724	0.0934
0.85	210.0	-0.9162	0.8975	0.0631
0.85	222.0	0.6888	0.6348	0.0514
0.85	234.0	-2.6162	2.6162	0.1613
0.85	246.0	0.5328	0.7983	0.0441
0.95	234.0	0.3573	0.8743	0.037

CLAS Physics Database