Measurement E151M1325

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:	0.0154
Q²:	0.005 GeV²
W:	1355.0 GeV
E_beam:	1.0539 GeV
ε:	0.8102

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.55	246.0	-1.1563	0.7242
0.65	234.0	-0.3564	0.8513
0.65	246.0	0.2338	0.92
0.75	246.0	0.5395	0.7696

CLAS Physics Database