Measurement E151M2437

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:	0.0321
Q²:	0.101 GeV²
W:	1925.0 GeV
E_beam:	2.999 GeV
ε:	0.7722

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.75	270.0	1.2502	0.9816	0.0955
0.85	102.0	1.4372	0.8121	0.1084
0.85	114.0	-0.8202	0.9495	0.0666
0.85	126.0	-1.001	1.0668	0.0785
0.85	186.0	1.6623	0.9572	0.1242
0.85	198.0	-0.7593	1.091	0.0627

CLAS Physics Database