Measurement E151M2113

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:	0.1497
Q²:	0.1715 GeV²
W:	1595.0 GeV
E_beam:	2.2596 GeV
ε:	0.835

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.85	234.0	1.309	0.8266	0.124
0.75	126.0	-1.2239	0.8851	0.0851
0.85	78.0	-1.1157	0.8543	0.0785
0.85	222.0	0.1182	1.0264	0.031
0.85	234.0	-1.794	0.8518	0.1205
0.85	246.0	-0.5454	0.9513	0.0465
0.85	258.0	-1.4334	0.9075	0.098
0.95	246.0	2.7649	1.277	0.1823
0.95	258.0	1.579	1.2285	0.107

CLAS Physics Database