Measurement E151M813

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:	0.4552
Q²:	0.2915 GeV²
W:	1415.0 GeV
E_beam:	2.2596 GeV
ε:	0.8858

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_UL	uncertainty	syst. uncert.
0.75	90.0	0.7535	0.6028	0.0578
0.75	102.0	-0.6638	0.4802	0.0546
0.85	102.0	-0.1303	0.6584	0.0312
0.85	234.0	0.37	0.7944	0.0386
0.85	258.0	-0.6223	0.6985	0.0507
0.85	270.0	-0.7255	0.6207	0.0563
0.85	282.0	0.1192	0.7224	0.031
0.95	306.0	-0.1837	0.8813	0.0323
0.75	114.0	0.0707	1.1731	0.0307
0.75	126.0	0.5241	1.216	0.0569
0.75	258.0	-0.0281	0.9573	0.0301
0.85	270.0	-0.9539	0.9151	0.093

CLAS Physics Database