CLAS Physics Database

Measurement E151M126

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: 0.0175
Q2: 0.0071 GeV2
W: 1385.0 GeV
Ebeam: 1.0539 GeV
ε: 0.7671

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] AUL uncertainty syst. uncert.
0.45 42.0 1.2148 0.7866 0.1414
0.45 54.0 -1.0825 0.7655 0.1268
0.55 30.0 0.3841 0.9181 0.053
0.55 42.0 1.2567 0.7203 0.1461
0.55 54.0 0.2201 0.7579 0.0391
0.55 222.0 -0.3642 0.7635 0.0512
0.55 234.0 -0.1711 0.8058 0.0358
0.55 246.0 -0.6924 0.5454 0.0843
0.65 42.0 1.2456 0.8134 0.1449
0.65 54.0 -0.4639 0.7036 0.0607
0.65 150.0 -0.9874 0.7497 0.1163
0.65 222.0 -0.013 0.6195 0.03
0.65 234.0 -0.4755 0.6581 0.0619
0.65 246.0 -0.142 0.5884 0.0341
0.65 258.0 -0.0597 0.7414 0.0308
0.75 222.0 0.1669 0.7253 0.0355
0.75 234.0 0.6247 0.5999 0.0771
0.75 246.0 0.3534 0.6195 0.0502
0.75 258.0 2.7606 2.7606 0.3155
0.85 222.0 0.2584 0.6945 0.042
0.85 234.0 1.6034 0.6275 0.1849
0.85 246.0 -0.3288 0.7422 0.048