Measurement E151M2303

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:	0.3553
Q²:	0.496 GeV²
W:	1565.0 GeV
E_beam:	2.999 GeV
ε:	0.8672

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.55	90.0	-1.6117	0.8773	0.1207
0.65	102.0	-0.693	0.8479	0.0585
0.65	114.0	-0.5048	0.993	0.0473
0.65	246.0	-0.4583	1.0293	0.0448
0.75	66.0	0.0214	0.8562	0.03
0.75	102.0	0.5376	0.91	0.0492
0.75	222.0	-0.0931	0.9284	0.0307
0.75	234.0	-1.2977	0.7686	0.0988
0.75	246.0	1.4909	0.8762	0.1122
0.85	54.0	-0.6833	0.9922	0.0579
0.85	210.0	0.1164	0.9402	0.0312
0.85	222.0	-1.0236	0.8462	0.0801
0.85	234.0	-0.6335	0.8309	0.0549
0.85	246.0	1.7586	0.719	0.131
0.85	258.0	0.767	0.7948	0.0632
0.85	270.0	0.0069	0.8701	0.03
0.85	282.0	-0.2871	0.8691	0.0365
0.85	294.0	-0.7428	0.8814	0.0617
0.95	222.0	0.32	0.879	0.0379
0.95	234.0	-0.1855	0.9022	0.0329
0.95	246.0	-1.9499	0.7227	0.1445
0.95	258.0	0.6511	0.8647	0.0559
0.95	270.0	0.4809	0.8934	0.046
0.95	282.0	-1.0459	0.6138	0.0816
0.95	294.0	0.8419	0.6119	0.068
0.95	306.0	-1.1287	0.7243	0.0872
0.95	318.0	0.2667	0.7767	0.0357

CLAS Physics Database