Measurement E151M1707

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:	1.1186
Q²:	0.348 GeV²
W:	1235.0 GeV
E_beam:	1.9889 GeV
ε:	0.8997

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.25	66.0	-0.8327	0.5722	0.0587
0.45	282.0	0.2245	0.6472	0.0329
0.65	270.0	1.3176	0.523	0.0853
0.65	282.0	0.4756	0.616	0.0416
0.75	102.0	0.3677	0.6027	0.0374
0.75	258.0	-1.2993	0.5181	0.0843
0.75	282.0	0.8145	0.5724	0.0578
0.85	102.0	0.5749	0.5748	0.046
0.85	258.0	0.3593	0.613	0.0371

CLAS Physics Database