Measurement E151M1230

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:	0.2619
Q²:	0.0291 GeV²
W:	1205.0 GeV
E_beam:	1.0539 GeV
ε:	0.9209

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.25	42.0	-0.0349	0.5826	0.0303
0.25	54.0	-0.508	0.5689	0.0647
0.35	54.0	0.1834	0.6144	0.0364
0.55	258.0	-0.2857	0.4584	0.044
0.55	270.0	-0.5772	0.4131	0.0717
0.55	282.0	0.6786	0.4085	0.0822
0.65	246.0	-0.4958	0.5441	0.0635
0.65	258.0	-0.054	0.3595	0.0306
0.65	270.0	0.1649	0.3621	0.0353
0.65	282.0	0.4947	0.4895	0.0633
0.75	162.0	1.0573	0.4876	0.123
0.75	174.0	0.4717	0.5454	0.0611
0.75	186.0	-0.8973	0.5621	0.1056
0.75	198.0	-0.2884	0.574	0.0443
0.75	210.0	0.336	0.5239	0.0483
0.75	246.0	0.2335	0.4897	0.0399
0.75	258.0	-0.3309	0.4467	0.0479
0.75	270.0	0.2033	0.4808	0.0378
0.85	150.0	0.7073	0.5673	0.0852
0.85	162.0	-0.2048	0.4293	0.0379
0.85	174.0	-0.3975	0.3231	0.0539
0.85	186.0	-0.6268	0.3803	0.0768
0.85	198.0	0.4359	0.4423	0.0576
0.85	210.0	-0.0601	0.4397	0.0308
0.85	222.0	-0.9928	0.421	0.1159

CLAS Physics Database