Measurement E151M1131

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:	0.237
Q²:	0.496 GeV²
W:	1685.0 GeV
E_beam:	2.999 GeV
ε:	0.8176

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_UL	uncertainty
0.75	234.0	0.7278	0.871
0.85	66.0	-0.5503	0.5912
0.85	78.0	-0.2348	0.5781
0.85	210.0	0.9871	0.8602
0.85	234.0	0.9097	0.716
0.85	246.0	1.3062	0.6616
0.85	258.0	-0.133	0.6038
0.85	270.0	0.9145	0.7404
0.95	246.0	-0.3184	0.5919
0.95	258.0	0.0803	0.6522
0.95	270.0	0.823	0.6022
0.95	282.0	0.5174	0.7191
0.95	294.0	-0.3212	0.5232
0.95	306.0	1.179	0.685

CLAS Physics Database