Measurement E151M2256

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:	0.5897
Q²:	0.7075 GeV²
W:	1445.0 GeV
E_beam:	2.999 GeV
ε:	0.8681

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.55	90.0	0.9984	0.8754
0.75	270.0	0.8375	0.8676
0.75	282.0	0.5673	0.9134
0.85	258.0	-1.6034	0.8364
0.85	270.0	1.4268	0.7541
0.85	294.0	-0.3258	0.8024
0.85	306.0	0.6092	0.7334
0.85	318.0	1.3914	0.7692
0.85	330.0	1.3031	0.7395

CLAS Physics Database