Measurement E151M2431

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:	0.0563
Q²:	0.1715 GeV²
W:	1895.0 GeV
E_beam:	2.999 GeV
ε:	0.7745

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.85	102.0	-1.9693	0.8769
0.85	186.0	0.4665	0.9171
0.85	198.0	-2.9176	2.9176
0.85	210.0	0.7972	1.0857

CLAS Physics Database