Measurement E151M2009

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:	0.6436
Q²:	0.348 GeV²
W:	1355.0 GeV
E_beam:	2.2596 GeV
ε:	0.8925

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.75	114.0	1.1039	0.708	0.0778
0.75	258.0	0.3594	0.6123	0.0473
0.85	270.0	0.6378	0.5799	0.054
0.85	294.0	0.0181	0.6407	0.03

CLAS Physics Database