Measurement E151M1905

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:	0.0227
Q²:	0.0291 GeV²
W:	1655.0 GeV
E_beam:	1.9889 GeV
ε:	0.7891

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.35	78.0	0.6984	0.716	0.0519
0.35	282.0	0.8156	0.7891	0.0578
0.45	18.0	0.4287	0.8431	0.0397
0.45	258.0	-0.4961	0.6856	0.0425
0.45	270.0	-1.3745	0.6438	0.0885
0.45	282.0	-0.6396	0.8007	0.049
0.55	78.0	-0.7126	0.8248	0.0526
0.55	126.0	-0.8137	0.6907	0.0577
0.55	210.0	-0.3018	0.8059	0.0351
0.55	258.0	1.5436	0.7212	0.0982
0.55	270.0	0.2755	0.6827	0.0343
0.55	282.0	-2.0996	2.0996	0.1307
0.65	126.0	-0.5305	0.7692	0.044
0.65	138.0	-0.9329	0.7664	0.064
0.65	150.0	-0.5102	0.8484	0.0431
0.65	210.0	-1.0839	0.7501	0.0722
0.65	222.0	0.3182	0.7988	0.0357
0.65	294.0	1.2237	0.7165	0.08
0.75	66.0	1.0119	0.7618	0.0683
0.75	126.0	-0.3813	0.8071	0.0379
0.75	210.0	-0.6462	0.7961	0.0493
0.75	222.0	-0.2154	0.7093	0.0327
0.75	234.0	0.6248	0.7111	0.0483
0.75	258.0	0.3233	0.7408	0.0358
0.75	270.0	-1.1623	0.5535	0.0766
0.75	282.0	0.4173	0.7054	0.0392
0.85	114.0	0.1208	0.6639	0.0309
0.85	126.0	0.6032	0.654	0.0473
0.85	198.0	-0.8971	0.8116	0.0621
0.85	210.0	-1.0525	0.5939	0.0705
0.85	222.0	0.5541	0.7122	0.045
0.85	234.0	-0.3739	0.765	0.0376
0.85	258.0	-0.2244	0.7811	0.0329

CLAS Physics Database