Measurement E151M1405

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:	0.0089
Q²:	0.0071 GeV²
W:	1475.0 GeV
E_beam:	1.0539 GeV
ε:	0.6071

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.35	42.0	0.7776	0.7558	0.0927
0.35	54.0	-0.0799	0.6942	0.0313
0.35	66.0	1.0722	0.8927	0.1246
0.45	42.0	-0.141	0.6655	0.034
0.45	54.0	0.413	0.6666	0.0554
0.45	66.0	1.1919	0.7507	0.1377
0.45	234.0	0.8723	0.7141	0.1029
0.55	54.0	0.6642	0.7972	0.0807
0.55	222.0	0.8464	0.7371	0.1001
0.55	234.0	-0.194	0.6928	0.0371
0.55	246.0	-1.2468	0.6638	0.1438
0.65	210.0	-1.138	0.7465	0.1318
0.65	222.0	-0.5246	0.7995	0.0663
0.65	234.0	-0.1271	0.6579	0.0332
0.65	246.0	0.4252	0.7214	0.0566
0.75	222.0	-0.7266	0.7242	0.0873
0.75	234.0	0.1258	0.6583	0.0332
0.75	246.0	1.7331	0.5904	0.1978
0.85	222.0	-0.6645	0.6492	0.0807
0.85	234.0	0.5556	0.6757	0.0695

CLAS Physics Database