Measurement E151M1344

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:	0.2731
Q²:	0.1435 GeV²
W:	1355.0 GeV
E_beam:	1.0539 GeV
ε:	0.6529

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.55	258.0	-0.1086	0.8144	0.0324
0.55	270.0	0.9222	0.9148	0.1082
0.65	246.0	1.4162	0.8592	0.1625
0.65	258.0	1.2594	0.8906	0.1452
0.65	270.0	-0.2429	0.9002	0.0406
0.75	138.0	0.5427	1.061	0.0682
0.75	258.0	-0.3516	0.7962	0.0497
0.75	270.0	0.2555	0.8565	0.0416
0.75	282.0	1.5689	0.7484	0.1795
0.85	126.0	0.4353	0.9238	0.0575
0.85	150.0	0.6945	0.8794	0.0839
0.85	246.0	1.1639	0.8228	0.1347
0.85	258.0	-0.8998	0.7199	0.1058
0.85	270.0	0.2944	0.7199	0.0447
0.85	282.0	-0.0883	0.6797	0.0316

CLAS Physics Database