Measurement E151M2354

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:	0.2552
Q²:	0.5925 GeV²
W:	1685.0 GeV
E_beam:	2.999 GeV
ε:	0.7962

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.85	234.0	0.7329	0.8582
0.85	246.0	-0.6773	0.7628
0.85	258.0	-1.8701	0.6208
0.95	234.0	-0.2946	0.7644
0.95	306.0	0.255	0.7514

CLAS Physics Database