Measurement E151M1914

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:	0.0929
Q²:	0.1435 GeV²
W:	1655.0 GeV
E_beam:	1.9889 GeV
ε:	0.7372

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.55	126.0	-0.1299	0.9056	0.031
0.65	114.0	0.1995	0.8712	0.0323
0.65	294.0	-1.4466	0.6867	0.0927
0.75	222.0	0.4193	0.6977	0.0393
0.75	234.0	-0.2597	0.8598	0.0339
0.75	282.0	0.9189	0.7413	0.0633
0.85	90.0	-0.4278	0.8507	0.0396
0.85	102.0	-0.1806	0.8053	0.0319
0.85	210.0	1.2759	0.6298	0.0829
0.85	234.0	-0.5777	0.7352	0.0461
0.95	234.0	1.0573	0.6967	0.0707

CLAS Physics Database