Measurement E151M2366

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:	0.1958
Q²:	0.4155 GeV²
W:	1715.0 GeV
E_beam:	2.999 GeV
ε:	0.8206

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.55	102.0	-0.943	0.9988
0.75	210.0	-2.02	0.8607
0.75	234.0	0.6263	0.9361
0.85	66.0	2.213	0.6646
0.85	90.0	1.2936	0.8417
0.85	198.0	-0.8552	0.9242
0.85	210.0	0.2895	1.0545
0.85	222.0	-0.7991	0.8533
0.85	234.0	-0.5399	0.7492
0.85	246.0	0.6394	0.8089
0.85	258.0	1.4263	0.8686
0.85	270.0	1.8101	0.8323
0.95	210.0	-0.5623	0.9183
0.95	222.0	0.2127	0.8234
0.95	234.0	0.2016	0.7351
0.95	246.0	1.6081	0.8184
0.95	258.0	0.9503	0.6917
0.95	270.0	0.9893	0.8054
0.95	282.0	0.8882	0.7361

CLAS Physics Database