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
0.35	78.0	0.6984	0.716
0.35	282.0	0.8156	0.7891
0.45	18.0	0.4287	0.8431
0.45	258.0	-0.4961	0.6856
0.45	270.0	-1.3745	0.6438
0.45	282.0	-0.6396	0.8007
0.55	78.0	-0.7126	0.8248
0.55	126.0	-0.8137	0.6907
0.55	210.0	-0.3018	0.8059
0.55	258.0	1.5436	0.7212
0.55	270.0	0.2755	0.6827
0.55	282.0	-2.0996	2.0996
0.65	126.0	-0.5305	0.7692
0.65	138.0	-0.9329	0.7664
0.65	150.0	-0.5102	0.8484
0.65	210.0	-1.0839	0.7501
0.65	222.0	0.3182	0.7988
0.65	294.0	1.2237	0.7165
0.75	66.0	1.0119	0.7618
0.75	126.0	-0.3813	0.8071
0.75	210.0	-0.6462	0.7961
0.75	222.0	-0.2154	0.7093
0.75	234.0	0.6248	0.7111
0.75	258.0	0.3233	0.7408
0.75	270.0	-1.1623	0.5535
0.75	282.0	0.4173	0.7054
0.85	114.0	0.1208	0.6639
0.85	126.0	0.6032	0.654
0.85	198.0	-0.8971	0.8116
0.85	210.0	-1.0525	0.5939
0.85	222.0	0.5541	0.7122
0.85	234.0	-0.3739	0.765
0.85	258.0	-0.2244	0.7811

CLAS Physics Database