Measurement E151M2989

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_LU
ε_L:	0.0849
Q²:	0.0291 GeV²
W:	1385.0 GeV
E_beam:	1.9889 GeV
ε:	0.9411

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LU	uncertainty
0.55	90.0	0.5827	0.2314
0.75	234.0	0.3377	0.2483

CLAS Physics Database