Measurement E151M2117

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:	0.0387
Q²:	0.0415 GeV²
W:	1625.0 GeV
E_beam:	2.2596 GeV
ε:	0.8586

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.65	198.0	-0.3383	0.922	0.0432
0.75	66.0	-1.2926	0.9269	0.1225
0.75	210.0	-2.2887	0.6932	0.2125
0.75	222.0	1.6937	0.7649	0.1585
0.75	270.0	-0.066	0.7633	0.0306
0.75	282.0	0.7661	0.7267	0.0765
0.85	114.0	1.4721	0.9653	0.1386
0.85	210.0	0.758	1.0075	0.0758
0.85	222.0	1.346	1.0461	0.1273
0.85	234.0	-2.3807	0.8644	0.2208
0.45	126.0	-0.9395	0.7786	0.0681
0.45	282.0	-0.1369	0.7742	0.0313
0.55	78.0	0.3573	0.7997	0.038
0.55	138.0	0.3184	0.8764	0.0365
0.55	210.0	-0.7046	0.9823	0.0548
0.65	198.0	-0.9179	0.9923	0.0668
0.75	210.0	-0.6121	0.9666	0.0499
0.75	222.0	-0.6843	0.85	0.0537
0.75	282.0	-0.7523	0.7693	0.0574
0.75	294.0	0.7845	0.7723	0.0592
0.85	102.0	0.0846	0.8585	0.0305
0.85	114.0	0.6617	0.8824	0.0525
0.85	210.0	-0.854	1.0174	0.0631

CLAS Physics Database