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
0.55	90.0	-1.6117	0.8773
0.65	102.0	-0.693	0.8479
0.65	114.0	-0.5048	0.993
0.65	246.0	-0.4583	1.0293
0.75	66.0	0.0214	0.8562
0.75	102.0	0.5376	0.91
0.75	222.0	-0.0931	0.9284
0.75	234.0	-1.2977	0.7686
0.75	246.0	1.4909	0.8762
0.85	54.0	-0.6833	0.9922
0.85	210.0	0.1164	0.9402
0.85	222.0	-1.0236	0.8462
0.85	234.0	-0.6335	0.8309
0.85	246.0	1.7586	0.719
0.85	258.0	0.767	0.7948
0.85	270.0	0.0069	0.8701
0.85	282.0	-0.2871	0.8691
0.85	294.0	-0.7428	0.8814
0.95	222.0	0.32	0.879
0.95	234.0	-0.1855	0.9022
0.95	246.0	-1.9499	0.7227
0.95	258.0	0.6511	0.8647
0.95	270.0	0.4809	0.8934
0.95	282.0	-1.0459	0.6138
0.95	294.0	0.8419	0.6119
0.95	306.0	-1.1287	0.7243
0.95	318.0	0.2667	0.7767

CLAS Physics Database