Measurement E151M1608

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:	0.016
Q²:	0.0121 GeV²
W:	1505.0 GeV
E_beam:	1.3383 GeV
ε:	0.7368

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.55	30.0	0.5671	0.9027	0.0446
0.55	42.0	-1.7757	0.4436	0.1083
0.55	138.0	-0.9854	0.9518	0.0647
0.55	150.0	-1.2541	0.7292	0.0809
0.55	210.0	-1.4537	0.8475	0.0897
0.55	222.0	-0.7262	0.9222	0.0518
0.55	234.0	-0.3016	0.54	0.051
0.65	126.0	-1.3994	0.7258	0.0891
0.65	138.0	-1.2396	0.9696	0.0781
0.65	210.0	-0.5287	0.5822	0.0455
0.65	222.0	-0.1958	0.659	0.0322
0.75	210.0	-0.4375	0.8086	0.0393
0.75	222.0	0.0452	0.8805	0.0301
0.75	234.0	-1.3722	0.9854	0.0852
0.85	222.0	-1.0667	0.7705	0.0689
0.85	234.0	0.5238	0.8587	0.0428
0.65	234.0	0.3649	0.7485	0.0371
0.75	210.0	-0.1552	0.7805	0.0314
0.75	222.0	-0.5472	0.7296	0.0444
0.75	234.0	0.7279	0.6663	0.0529
0.85	126.0	0.7254	0.6897	0.0528
0.85	222.0	0.7888	0.7432	0.056
0.85	234.0	-0.3936	0.655	0.0382

CLAS Physics Database