Measurement E151M1326

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:	0.0183
Q²:	0.0059 GeV²
W:	1355.0 GeV
E_beam:	1.0539 GeV
ε:	0.8092

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.45	54.0	-0.111	1.0409	0.0325
0.55	54.0	0.6416	0.8792	0.0783
0.55	234.0	-1.0664	0.9055	0.124
0.55	246.0	0.3465	0.7815	0.0493
0.65	54.0	0.2685	0.9183	0.0426
0.65	222.0	-0.2437	0.8407	0.0407
0.65	234.0	-0.1141	0.7194	0.0326
0.65	246.0	0.5344	0.7416	0.0673
0.65	258.0	0.1826	0.876	0.0364
0.75	222.0	-0.6936	0.8803	0.0838
0.75	234.0	0.9553	0.8491	0.1118
0.75	246.0	0.4995	0.6374	0.0638
0.85	234.0	0.4836	0.7112	0.0623
0.85	246.0	-0.6181	0.6739	0.0759

CLAS Physics Database