Measurement E151M1960

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:	1.028
Q²:	0.2445 GeV²
W:	1235.0 GeV
E_beam:	2.2596 GeV
ε:	0.9443

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.65	282.0	-3.2293	2.1548	0.2983
0.65	294.0	-4.6127	2.1067	0.425
0.75	282.0	-0.7724	2.1661	0.0771
0.85	78.0	2.5915	3.2569	0.24
0.85	90.0	-0.0005	2.9041	0.03
0.85	114.0	5.1644	2.8653	0.4756
0.55	270.0	-0.4018	0.5256	0.0398
0.55	282.0	-1.0439	0.4218	0.0742
0.75	282.0	-0.596	0.4322	0.049
0.85	90.0	-0.716	0.4884	0.0554
0.85	102.0	0.123	0.6031	0.031
0.85	282.0	0.3968	0.5136	0.0396

CLAS Physics Database