Measurement E151M1648

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:	0.0215
Q²:	0.0245 GeV²
W:	1565.0 GeV
E_beam:	1.3383 GeV
ε:	0.6351

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.45	30.0	-0.0073	0.8737	0.03
0.45	42.0	-0.6756	0.6707	0.0673
0.55	138.0	-2.8394	2.8394	0.1678
0.55	150.0	0.4282	1.1554	0.039
0.55	162.0	-0.0136	0.9092	0.03
0.55	210.0	0.1783	1.3009	0.0317
0.55	222.0	-0.4414	0.6538	0.0418
0.55	234.0	-1.9112	1.1032	0.1151
0.65	150.0	0.2184	1.3343	0.0326
0.65	210.0	-1.0973	1.018	0.0705
0.65	222.0	-0.117	1.2332	0.0308
0.65	234.0	-2.0718	0.8748	0.1242
0.75	222.0	0.8263	0.9318	0.0566
0.75	234.0	-0.3043	1.1863	0.0348
0.75	246.0	-1.8381	1.0532	0.111
0.85	222.0	-1.0868	0.9713	0.07
0.85	234.0	-0.1337	1.0934	0.031
0.85	246.0	1.0475	0.9503	0.0679
0.55	246.0	-1.679	0.8186	0.105
0.65	138.0	-1.6078	0.8532	0.1009
0.65	150.0	-1.9871	0.8253	0.1228
0.65	222.0	-1.0279	0.8018	0.0685
0.75	138.0	-0.8698	0.8686	0.0601
0.75	210.0	-0.1773	0.9404	0.0318
0.75	222.0	-0.1508	0.8781	0.0313
0.75	234.0	1.8445	0.7978	0.1145
0.75	246.0	-1.0174	0.8252	0.068
0.85	210.0	1.2486	0.8909	0.0806
0.85	222.0	-0.3318	0.8665	0.036
0.85	234.0	1.3151	0.6973	0.0843
0.85	246.0	-0.0934	0.8243	0.0305

CLAS Physics Database