Measurement E151M458

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:	0.0167
Q²:	0.0291 GeV²
W:	1625.0 GeV
E_beam:	1.3383 GeV
ε:	0.5197

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_UL	uncertainty
0.85	234.0	-0.034	0.6826
0.75	234.0	-0.6099	0.8316
0.85	222.0	-1.0613	0.6615
0.85	246.0	-0.2336	0.9589

CLAS Physics Database