Measurement E151M2411

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:	0.0694
Q²:	0.1715 GeV²
W:	1835.0 GeV
E_beam:	2.999 GeV
ε:	0.812

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.75	222.0	0.6728	1.0124	0.0573
0.85	90.0	-1.248	0.959	0.0953
0.85	102.0	-0.2329	1.0151	0.0344
0.85	114.0	-0.3755	1.0638	0.0405
0.85	174.0	-1.2313	0.9429	0.0942
0.85	186.0	-0.116	0.8493	0.0312
0.85	198.0	-1.316	0.8362	0.1
0.85	210.0	0.3984	1.0219	0.0416
0.85	222.0	0.4998	1.0308	0.047
0.85	234.0	-0.2589	0.9834	0.0354

CLAS Physics Database