Measurement E151M1239

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:	0.8137
Q²:	0.1435 GeV²
W:	1205.0 GeV
E_beam:	1.0539 GeV
ε:	0.8234

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.45	282.0	-0.1766	0.4717
0.55	282.0	-0.3599	0.4862
0.65	282.0	1.6138	1.6138
0.95	162.0	-0.5232	0.4121

CLAS Physics Database