Measurement E151M1625

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:	0.0112
Q²:	0.0101 GeV²
W:	1535.0 GeV
E_beam:	1.3383 GeV
ε:	0.6959

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.55	138.0	-2.0438	0.9528	0.1226
0.65	222.0	-1.0018	1.0442	0.0655
0.75	222.0	-1.3458	0.8946	0.0838
0.75	234.0	0.6733	1.0367	0.0493
0.55	222.0	-0.9212	0.8797	0.0628
0.65	138.0	-0.2233	0.8991	0.0329
0.65	222.0	0.1987	0.8986	0.0323
0.75	222.0	-1.1036	0.7978	0.0726
0.85	126.0	0.9553	0.8881	0.0646
0.85	222.0	0.5208	0.8904	0.0433

CLAS Physics Database