Measurement E151M1670

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:	0.0385
Q²:	0.0593 GeV²
W:	1595.0 GeV
E_beam:	1.3383 GeV
ε:	0.5483

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.65	222.0	-0.5702	1.1169	0.0447
0.75	246.0	0.1365	1.1259	0.031
0.85	234.0	-1.4118	0.7899	0.0874
0.85	258.0	-0.6593	1.2182	0.0487
0.55	234.0	-0.2124	0.9347	0.0326
0.85	126.0	-1.1398	0.9959	0.0746
0.85	234.0	1.3817	0.8221	0.0881

CLAS Physics Database