Measurement E151M2365

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:	0.1764
Q²:	0.348 GeV²
W:	1715.0 GeV
E_beam:	2.999 GeV
ε:	0.8352

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.65	102.0	-0.5972	1.0325
0.65	114.0	-0.1299	1.0675
0.65	138.0	1.1647	0.8647
0.65	222.0	1.5438	0.9946
0.75	78.0	1.2371	0.7461
0.75	114.0	0.8562	0.9378
0.75	186.0	-0.249	0.9976
0.75	198.0	-0.5749	0.961
0.75	210.0	-2.9812	2.9812
0.75	234.0	0.0492	1.0098
0.75	246.0	1.5241	0.8233
0.85	66.0	-0.62	0.8283
0.85	78.0	-2.0109	0.8589
0.85	90.0	0.7575	0.8643
0.85	102.0	-1.2521	0.9537
0.85	186.0	-0.1516	1.0535
0.85	198.0	0.8331	0.8254
0.85	210.0	-0.7286	0.7841
0.85	222.0	0.3011	0.7151
0.85	234.0	0.7892	0.7085
0.85	246.0	-1.0777	0.9047
0.85	258.0	0.4216	0.9963
0.95	186.0	0.8635	0.8486
0.95	198.0	1.3232	0.663
0.95	210.0	0.8188	0.9169
0.95	222.0	-0.897	0.7234
0.95	234.0	0.2025	0.7892
0.95	246.0	-0.8995	0.6898
0.95	258.0	0.3517	0.706
0.95	270.0	0.6867	0.7465
0.95	282.0	0.5452	0.7711

CLAS Physics Database