Measurement E151M1906

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:	0.0269
Q²:	0.0348 GeV²
W:	1655.0 GeV
E_beam:	1.9889 GeV
ε:	0.7866

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.35	66.0	-0.347	0.9253
0.35	270.0	0.4202	0.7564
0.35	282.0	-1.1597	0.7416
0.45	78.0	1.1372	0.7021
0.45	90.0	-1.1445	0.8049
0.45	126.0	0.0072	0.815
0.45	270.0	-0.5372	0.6
0.45	282.0	-2.5542	2.5542
0.45	294.0	-0.5635	0.7153
0.45	330.0	-0.417	0.8159
0.55	126.0	0.2955	0.6744
0.55	138.0	-1.4934	0.7469
0.55	198.0	-0.7977	0.8268
0.55	210.0	0.2739	0.7943
0.55	222.0	0.3627	0.8144
0.55	258.0	-1.4447	0.6218
0.55	270.0	-0.2323	0.7147
0.55	282.0	-0.7694	0.7447
0.65	66.0	-1.5843	0.7315
0.65	114.0	0.0217	0.8684
0.65	126.0	-0.8381	0.7068
0.65	138.0	0.122	0.6598
0.65	210.0	-0.8032	0.699
0.65	222.0	-1.5738	0.6314
0.65	246.0	-1.4003	0.6502
0.65	282.0	1.0505	0.6314
0.75	66.0	-1.6848	0.6579
0.75	78.0	-0.4041	0.8228
0.75	114.0	0.2056	0.8107
0.75	126.0	0.6741	0.851
0.75	198.0	-0.1503	0.8311
0.75	210.0	-0.5076	0.6117
0.75	222.0	-1.2631	0.5622
0.75	234.0	-0.5418	0.7171
0.75	258.0	0.871	0.7005
0.75	270.0	-0.1435	0.6025
0.75	282.0	-0.2104	0.6011
0.75	294.0	-0.9404	0.742
0.85	114.0	-0.1202	0.6455
0.85	126.0	0.0716	0.6651
0.85	138.0	0.5786	0.8488
0.85	198.0	0.0506	0.7699
0.85	210.0	-0.6105	0.6772
0.85	222.0	-0.5444	0.6884

CLAS Physics Database