Measurement E151M1657

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:	0.0901
Q²:	0.1435 GeV²
W:	1565.0 GeV
E_beam:	1.3383 GeV
ε:	0.5225

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.85	258.0	-0.4442	0.9912	0.0401
0.55	246.0	1.802	1.0077	0.109
0.85	246.0	-0.7416	1.0174	0.0525

CLAS Physics Database