Measurement E151M20

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:	0.0541
Q²:	0.0071 GeV²
W:	1235.0 GeV
E_beam:	1.0539 GeV
ε:	0.9208

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_UL	uncertainty
0.55	258.0	0.2722	0.5728
0.65	246.0	-0.2013	0.4378
0.65	258.0	0.2702	0.4959
0.65	270.0	0.2522	0.5343
0.75	258.0	0.0698	0.5396

CLAS Physics Database