Measurement E151M1898

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:	0.0804
Q²:	0.101 GeV²
W:	1625.0 GeV
E_beam:	1.9889 GeV
ε:	0.7831

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.45	270.0	-0.59	0.8945	0.0467
0.45	282.0	-1.198	0.8459	0.0785
0.55	126.0	-0.1286	0.9766	0.031
0.55	210.0	-0.6196	0.9341	0.0481
0.55	270.0	1.7693	0.7849	0.1113
0.65	114.0	0.0996	0.9084	0.0306
0.65	126.0	-0.3404	0.9105	0.0364
0.65	138.0	-0.7451	0.9552	0.0542
0.65	210.0	0.9485	0.8948	0.0648
0.75	210.0	-1.6671	0.6859	0.1054
0.75	222.0	-0.7032	0.8454	0.0521
0.75	234.0	-1.1824	0.88	0.0777
0.75	246.0	0.3617	0.9192	0.0372
0.75	282.0	-0.1588	0.8113	0.0315
0.75	294.0	0.0305	0.7442	0.0301
0.85	102.0	2.2876	0.6301	0.1418
0.85	114.0	0.4806	0.8963	0.0418
0.85	210.0	1.0733	0.8198	0.0716
0.85	222.0	-1.1239	0.7194	0.0744
0.85	234.0	0.3448	0.7169	0.0366
0.85	246.0	-0.1584	0.8588	0.0315
0.95	234.0	0.8489	0.6535	0.0596

CLAS Physics Database