Measurement E151M2417

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:	0.0286
Q²:	0.0707 GeV²
W:	1865.0 GeV
E_beam:	2.999 GeV
ε:	0.8183

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.75	198.0	-0.8346	1.2291	0.0675
0.75	270.0	-0.5289	0.9	0.0487
0.85	102.0	-2.0399	0.9825	0.1509
0.85	114.0	-0.4525	0.8908	0.0445
0.85	186.0	-0.6412	1.1784	0.0553
0.85	198.0	-1.603	0.8969	0.12
0.85	210.0	-0.1912	1.1162	0.033
0.85	270.0	0.4796	1.0669	0.0459

CLAS Physics Database