Measurement E151M1681

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:	0.0195
Q²:	0.0348 GeV²
W:	1625.0 GeV
E_beam:	1.3383 GeV
ε:	0.514

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.55	234.0	-0.5199	1.393	0.0426
0.65	222.0	1.2101	1.1226	0.0765
0.75	222.0	0.6069	1.0933	0.0463
0.75	246.0	-1.1312	1.0191	0.0723

CLAS Physics Database