Measurement E151M1766

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:	0.618
Q²:	0.348 GeV²
W:	1355.0 GeV
E_beam:	1.9889 GeV
ε:	0.8569

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.65	102.0	1.4511	0.6788	0.0929
0.65	270.0	-0.0837	0.7101	0.0304
0.75	78.0	-1.4346	0.695	0.092
0.75	90.0	1.5665	0.597	0.0996
0.75	102.0	0.4283	0.7105	0.0397
0.75	294.0	-0.8991	0.6946	0.0622
0.85	90.0	-0.0256	0.7878	0.03
0.85	102.0	2.2219	2.2219	0.1379
0.85	222.0	-0.2803	0.7468	0.0345
0.85	234.0	1.0763	0.6729	0.0718
0.85	270.0	-0.2139	0.7028	0.0327
0.85	282.0	-0.1554	0.7033	0.0314
0.85	294.0	0.8644	0.6566	0.0604
0.95	234.0	-0.2042	0.7148	0.0325
0.95	294.0	0.4764	0.6282	0.0416

CLAS Physics Database