Measurement E151M2233

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_LL
ε_L:	0.7236
Q²:	0.7075 GeV²
W:	1385.0 GeV
E_beam:	2.999 GeV
ε:	0.8846

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.75	78.0	-0.3103	0.7914	0.0375
0.75	90.0	-0.2262	0.9417	0.0342
0.75	258.0	-0.7442	0.8303	0.0617
0.75	306.0	-0.5464	0.7932	0.0497
0.85	270.0	0.5266	0.8527	0.0486
0.85	282.0	-0.2398	0.8385	0.0347

CLAS Physics Database