Measurement E151M2200

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:	0.9964
Q²:	0.7075 GeV²
W:	1295.0 GeV
E_beam:	2.999 GeV
ε:	0.9048

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.65	258.0	-1.1708	0.7118	0.09
0.75	282.0	-0.7104	0.7641	0.0596
0.85	282.0	1.4549	0.736	0.1097
0.85	318.0	-0.6559	0.8027	0.0562
0.85	330.0	-0.2835	0.7148	0.0364

CLAS Physics Database