CLAS Physics Database

Measurement E151M573

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: AUL
εL: 0.3982
Q2: 0.2445 GeV2
W: 1415.0 GeV
Ebeam: 1.9889 GeV
ε: 0.8633

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] AUL uncertainty
0.35 66.0 1.5164 0.7968
0.35 294.0 -1.1103 0.5069
0.55 102.0 -1.866 0.4526
0.65 90.0 1.2334 0.7651
0.65 102.0 0.6963 0.6609
0.65 114.0 -0.9677 0.58
0.65 246.0 -0.4677 0.6249
0.65 270.0 0.5632 0.6029
0.75 90.0 -0.759 0.5501
0.75 102.0 1.1051 0.7911
0.75 114.0 0.2857 0.661
0.75 126.0 0.6993 0.7789
0.75 138.0 -0.0747 0.7699
0.75 234.0 0.5197 0.6106
0.75 246.0 -0.3528 0.5375
0.75 258.0 0.1384 0.5673
0.75 270.0 -0.7492 0.5238
0.75 282.0 0.4442 0.6963
0.85 66.0 1.2174 0.7313
0.85 90.0 0.6585 0.7698
0.85 102.0 1.314 0.6406
0.85 114.0 -0.7045 0.5105
0.85 126.0 0.3099 0.6759
0.85 138.0 -0.1439 0.6247
0.85 222.0 -0.7605 0.6121
0.85 234.0 0.0453 0.5664
0.85 246.0 0.2906 0.5778
0.85 258.0 -0.0701 0.5363
0.85 270.0 -1.0565 0.4494
0.85 282.0 0.2914 0.5329
0.85 294.0 -0.146 0.5697
0.95 66.0 0.4811 0.6945
0.95 234.0 0.4632 0.5769
0.95 246.0 0.3555 0.6261
0.95 258.0 0.6711 0.5438
0.95 282.0 0.2728 0.5115
0.95 294.0 0.4803 0.5558