Measurement E151M2316

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:	0.3207
Q²:	0.496 GeV²
W:	1595.0 GeV
E_beam:	2.999 GeV
ε:	0.8562

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.55	102.0	1.4191	0.9871	0.1072
0.65	90.0	-1.2023	0.9605	0.0922
0.65	102.0	1.0891	0.9726	0.0845
0.65	246.0	0.5852	1.0484	0.052
0.75	102.0	2.27	0.6762	0.1673
0.75	234.0	2.2496	0.9006	0.1659
0.75	246.0	-0.1683	0.9283	0.0324
0.85	54.0	-1.5939	0.8968	0.1194
0.85	66.0	1.5232	0.7516	0.1145
0.85	222.0	0.169	0.9863	0.0324
0.85	234.0	-0.5677	0.876	0.0509
0.85	246.0	1.0825	0.8997	0.084
0.85	258.0	-0.0909	0.7001	0.0307
0.85	270.0	0.4867	0.8307	0.0463
0.85	282.0	-2.3478	0.7781	0.1729
0.95	246.0	0.886	0.9849	0.0709
0.95	258.0	-0.1955	0.9673	0.0332
0.95	270.0	-1.1951	0.7129	0.0917
0.95	282.0	1.3663	0.7709	0.1035
0.95	294.0	-0.0985	0.763	0.0308
0.95	306.0	0.4008	0.6944	0.0418
0.95	318.0	0.3091	0.789	0.0374

CLAS Physics Database