Measurement E151M2024

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:	0.1022
Q²:	0.0415 GeV²
W:	1415.0 GeV
E_beam:	2.2596 GeV
ε:	0.9455

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.75	150.0	0.4189	0.9645	0.0405
0.75	234.0	-0.9712	0.8182	0.0699
0.85	222.0	-0.0658	1.0225	0.0303
0.85	246.0	1.4732	0.8984	0.1004
0.65	234.0	2.0011	1.1723	0.1863

CLAS Physics Database