Measurement E151M121

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_UL
ε_L:	0.249
Q²:	0.1205 GeV²
W:	1355.0 GeV
E_beam:	1.0539 GeV
ε:	0.6795

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_UL	uncertainty	syst. uncert.
0.35	42.0	0.1992	0.8626	0.0376
0.45	258.0	0.5324	0.854	0.0676
0.55	246.0	0.1793	0.8371	0.0363
0.55	258.0	0.2739	0.6994	0.0433
0.55	270.0	1.4847	0.6695	0.1716
0.65	234.0	0.083	0.8051	0.0314
0.65	246.0	-1.2051	0.5618	0.1403
0.65	258.0	-0.5166	0.5373	0.066
0.65	270.0	-0.4775	0.5098	0.0621
0.75	138.0	0.0368	0.7094	0.0303
0.75	174.0	-0.2955	0.678	0.0451
0.75	234.0	0.3262	0.8014	0.0477
0.75	246.0	-0.5449	0.5045	0.0689
0.75	258.0	0.8831	0.5794	0.1049
0.75	270.0	0.2833	0.5652	0.044
0.75	282.0	0.2173	0.6163	0.0389
0.85	126.0	-1.6869	0.5568	0.1943
0.85	138.0	-0.5891	0.7134	0.0734
0.85	150.0	-0.1722	0.7996	0.0358
0.85	162.0	-0.6953	0.6772	0.0846
0.85	174.0	-0.5968	0.6921	0.0742
0.85	246.0	0.0714	0.6676	0.0311
0.85	258.0	1.0759	0.6334	0.126
0.85	270.0	0.2265	0.5181	0.0395
0.85	282.0	1.2352	0.6039	0.1437
0.85	294.0	-0.7389	0.6652	0.0893
0.95	246.0	0.3274	0.6421	0.0478

CLAS Physics Database