Measurement E151M2167

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:	1.4338
Q²:	0.4155 GeV²
W:	1205.0 GeV
E_beam:	2.999 GeV
ε:	0.9548

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.35	282.0	-0.748	0.748	0.062
0.45	282.0	-0.3447	0.7143	0.039
0.45	294.0	-0.525	0.7086	0.0485
0.55	282.0	-0.3686	0.6761	0.0402
0.75	66.0	-0.0981	0.6355	0.0308
0.75	78.0	-0.7798	0.6248	0.064
0.75	270.0	-1.3042	0.6227	0.0992
0.75	282.0	0.0695	0.7396	0.0304
0.85	66.0	1.2305	0.6403	0.0941
0.85	90.0	0.6327	0.7067	0.0548

CLAS Physics Database