Measurement E151M194

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_UL
ε_L:	0.053
Q²:	0.0496 GeV²
W:	1475.0 GeV
E_beam:	1.0539 GeV
ε:	0.5492

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_UL	uncertainty	syst. uncert.
0.25	42.0	0.7659	0.7575	0.0922
0.25	54.0	0.5533	0.6694	0.0697
0.35	54.0	-0.5862	0.5672	0.0731
0.45	42.0	-0.7959	0.6275	0.0954
0.45	54.0	0.0965	0.7305	0.0319
0.45	234.0	0.5762	0.7682	0.0721
0.45	258.0	0.1076	0.78	0.0324
0.55	174.0	-0.2676	0.6951	0.0427
0.55	222.0	0.9571	0.7641	0.1129
0.55	234.0	0.1897	0.6373	0.037
0.55	246.0	1.0042	0.5871	0.1181
0.55	258.0	1.1527	0.7279	0.1345
0.55	270.0	0.909	0.888	0.1077
0.65	150.0	-0.8672	0.7117	0.1031
0.65	234.0	0.6033	0.5347	0.0749
0.65	246.0	0.6589	0.5869	0.0807
0.65	258.0	0.7382	0.5759	0.0892
0.75	150.0	-0.0668	0.79	0.0309
0.75	234.0	0.683	0.5787	0.0833
0.75	246.0	0.1036	0.4984	0.0322
0.75	258.0	0.5904	0.4981	0.0736
0.75	270.0	-1.0231	0.5993	0.1202
0.85	234.0	1.2412	0.5313	0.1444
0.85	246.0	-0.9673	0.368	0.1141
0.85	258.0	-0.418	0.5135	0.0562
0.85	270.0	-0.064	0.6022	0.0309

CLAS Physics Database