Measurement E151M1207

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_UL
ε_L:	0.0417
Q²:	0.1205 GeV²
W:	1895.0 GeV
E_beam:	2.999 GeV
ε:	0.7875

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_UL	uncertainty
0.85	114.0	0.8668	0.9288
0.85	126.0	0.6084	0.8565
0.85	186.0	1.4298	1.0328
0.85	198.0	0.4598	1.0239
0.85	210.0	0.2194	0.9002

CLAS Physics Database