Measurement E151M2165

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:	1.3335
Q²:	0.2915 GeV²
W:	1205.0 GeV
E_beam:	2.999 GeV
ε:	0.9677

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.45	282.0	0.5149	0.6017	0.0479
0.55	282.0	0.6122	0.6703	0.0536
0.55	294.0	-0.4242	0.5741	0.043
0.65	66.0	-0.102	0.7397	0.0309
0.65	282.0	0.4106	0.5652	0.0423
0.65	294.0	0.8475	0.6035	0.0684
0.75	66.0	-1.3952	0.5479	0.1055
0.75	78.0	0.0037	0.5894	0.03
0.75	90.0	-0.4026	0.688	0.0419
0.75	270.0	-0.1596	0.6934	0.0322
0.75	282.0	-0.5835	0.56	0.0519
0.75	294.0	0.7343	0.5455	0.0611
0.85	54.0	-1.2659	0.5524	0.0966
0.85	66.0	-0.4447	0.5984	0.044
0.85	78.0	-0.3838	0.6091	0.0409
0.85	90.0	0.3585	0.6523	0.0397
0.85	102.0	0.1989	0.6625	0.0333
0.85	294.0	-0.3868	0.6109	0.0411
0.95	42.0	0.2309	0.5406	0.0344
0.95	54.0	-0.0178	0.6429	0.03
0.95	66.0	-0.3948	0.5755	0.0415
0.95	78.0	-0.0066	0.6463	0.03
0.95	90.0	-0.6043	0.6253	0.0531

CLAS Physics Database