Measurement E151M2123

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:	0.1
Q²:	0.1205 GeV²
W:	1625.0 GeV
E_beam:	2.2596 GeV
ε:	0.8333

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.65	126.0	-1.6112	0.814	0.109
0.75	210.0	-0.7892	0.9904	0.0595
0.75	234.0	-2.6173	2.6173	0.1729
0.85	90.0	1.1062	0.8126	0.078
0.85	102.0	-0.554	0.9611	0.0469
0.85	222.0	0.2924	0.8522	0.0355
0.85	234.0	0.0602	1.041	0.0303
0.65	234.0	0.1271	0.8426	0.0322
0.65	294.0	0.1982	0.7469	0.0351
0.75	126.0	-0.4352	0.9852	0.05
0.75	294.0	-0.4128	0.7699	0.0484
0.85	102.0	1.3519	1.1153	0.1278
0.85	222.0	-0.1676	0.7857	0.0337

CLAS Physics Database