Measurement E151M1303

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:	0.0088
Q²:	0.0023 GeV²
W:	1325.0 GeV
E_beam:	1.0539 GeV
ε:	0.8482

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.55	234.0	1.4073	0.6449	0.1615
0.55	246.0	-0.2247	0.7075	0.0393
0.65	234.0	-0.8368	0.643	0.099
0.65	246.0	0.9972	0.7939	0.1164
0.65	258.0	-1.4138	0.6122	0.1623
0.75	222.0	-1.1009	0.7703	0.1277
0.75	234.0	0.752	0.7265	0.09
0.75	246.0	-0.3193	0.6703	0.0469
0.75	258.0	0.2297	0.87	0.0396
0.85	222.0	-0.8349	0.7012	0.0988
0.85	234.0	0.3101	0.7921	0.0461
0.85	246.0	1.6808	0.6821	0.1919

CLAS Physics Database