Measurement E151M1169

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:	0.1438
Q²:	0.348 GeV²
W:	1775.0 GeV
E_beam:	2.999 GeV
ε:	0.8046

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_UL	uncertainty	syst. uncert.
0.85	78.0	-1.4559	0.6077	0.1106
0.85	90.0	-0.4662	0.832	0.0454
0.85	102.0	0.736	1.0164	0.0616
0.85	186.0	1.8371	1.0968	0.1376
0.85	198.0	-0.2986	0.9169	0.0371
0.95	234.0	0.1118	0.809	0.0311
0.95	246.0	-0.3423	0.6568	0.0391
0.95	258.0	-1.1023	0.6611	0.086

CLAS Physics Database