CLAS Physics Database

Measurement E151M659

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: 0.0792
Q2: 0.0844 GeV2
W: 1595.0 GeV
Ebeam: 1.9889 GeV
ε: 0.8139

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] AUL uncertainty syst. uncert.
0.45 78.0 1.6953 0.892 0.1079
0.45 282.0 0.4059 0.8622 0.0389
0.55 222.0 2.3653 0.7376 0.1477
0.55 270.0 2.029 0.7006 0.1277
0.55 282.0 -0.1509 0.7788 0.0314
0.65 126.0 -0.8169 0.6673 0.0583
0.65 150.0 -1.3289 0.6044 0.0866
0.65 198.0 -0.0874 0.8467 0.0305
0.65 210.0 0.134 0.8403 0.0311
0.65 222.0 0.5929 0.6791 0.0471
0.65 294.0 1.2259 0.73 0.0808
0.75 126.0 -0.4419 0.6802 0.0404
0.75 138.0 -0.6575 0.6865 0.0502
0.75 210.0 0.6687 0.8588 0.0507
0.75 222.0 0.9074 0.9015 0.0631
0.75 234.0 0.3124 0.5989 0.0356
0.75 246.0 0.3583 0.8662 0.0372
0.75 270.0 0.5274 0.7749 0.044
0.75 282.0 -0.1264 0.5866 0.031
0.75 294.0 0.8928 0.6591 0.0623
0.85 102.0 -0.8051 0.6358 0.0577
0.85 114.0 0.1768 0.7757 0.0319
0.85 210.0 -0.2129 0.7672 0.0327
0.85 222.0 0.038 0.5513 0.0301
0.85 234.0 0.592 0.6613 0.047
0.85 246.0 0.3663 0.7172 0.0374
0.95 234.0 0.4216 0.7734 0.0396