CLAS Physics Database

Measurement E151M310

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: 0.0333
Q2: 0.0121 GeV2
W: 1385.0 GeV
Ebeam: 1.3383 GeV
ε: 0.8648

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] AUL uncertainty syst. uncert.
0.55 234.0 -0.0786 0.4972 0.0317
0.65 138.0 0.3461 1.0391 0.0365
0.65 150.0 0.004 1.0179 0.03
0.65 222.0 0.0307 0.4979 0.0355
0.65 234.0 0.4351 0.4387 0.0434
0.65 246.0 -0.0294 0.4012 0.0805
0.75 150.0 -0.734 0.6437 0.0545
0.75 222.0 0.1475 0.5835 0.0314
0.75 234.0 -0.0792 0.4157 0.0304
0.85 210.0 -0.3987 0.7586 0.0384
0.85 222.0 0.7463 1.0701 0.054
0.85 234.0 -0.0208 0.7565 0.03
0.85 246.0 -0.6992 0.5627 0.0517
0.75 246.0 1.1027 0.5058 0.0746
0.85 222.0 0.5743 0.5906 0.0465
0.85 234.0 1.4878 0.59 0.0969
0.85 246.0 0.1818 0.5828 0.032