Measurement E151M2424

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:	0.0827
Q²:	0.2445 GeV²
W:	1865.0 GeV
E_beam:	2.999 GeV
ε:	0.7757

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.85	90.0	-0.1947	0.9532
0.85	186.0	-0.4414	1.0189
0.85	210.0	-0.8037	0.9241
0.95	222.0	-0.7251	1.0316

CLAS Physics Database