Measurement E151M1366

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:	0.01
Q²:	0.005 GeV²
W:	1415.0 GeV
E_beam:	1.0539 GeV
ε:	0.7229

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.45	54.0	-0.6113	0.9959	0.0752
0.45	66.0	-0.9563	1.0154	0.112
0.55	54.0	0.5906	0.921	0.0731
0.55	234.0	-0.2075	0.8438	0.038
0.65	42.0	0.7098	0.9138	0.0855
0.65	222.0	-0.1581	0.8006	0.0349
0.65	234.0	-0.9599	0.8041	0.1123
0.65	246.0	-0.1058	0.7107	0.0323
0.75	234.0	0.4532	0.7556	0.0593
0.85	222.0	-1.1267	0.8264	0.1306
0.85	234.0	-0.7817	0.7689	0.0931

CLAS Physics Database