Measurement E151M1568

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:	0.3049
Q²:	0.2445 GeV²
W:	1415.0 GeV
E_beam:	1.3383 GeV
ε:	0.6611

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.85	126.0	2.43	0.8341	0.1487
0.85	258.0	0.7691	1.0289	0.0538
0.95	282.0	-0.317	1.0668	0.0352
0.85	270.0	1.3002	0.7748	0.0835

CLAS Physics Database