CLAS Physics Database

Measurement E151M2255

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: ALL
εL: 0.5715
Q2: 0.5925 GeV2
W: 1445.0 GeV
Ebeam: 2.999 GeV
ε: 0.8875

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALL uncertainty syst. uncert.
0.55 78.0 0.451 0.8527 0.0444
0.55 90.0 2.5448 2.5448 0.187
0.65 78.0 0.667 0.869 0.0569
0.65 90.0 -0.7488 0.9387 0.062
0.65 102.0 -0.3379 0.9828 0.0387
0.65 258.0 0.7975 0.8626 0.0651
0.75 78.0 1.2581 0.7844 0.096
0.75 90.0 1.0742 0.9588 0.0835
0.75 102.0 1.7053 0.8272 0.1272
0.75 114.0 -0.6316 0.9828 0.0548
0.75 234.0 -0.4328 0.8183 0.0434
0.75 258.0 0.1997 0.7651 0.0333
0.75 270.0 1.0989 0.7331 0.0851
0.75 282.0 -0.7055 0.9174 0.0593
0.85 90.0 1.5756 0.8476 0.1181
0.85 258.0 2.617 2.617 0.1921
0.85 270.0 0.9822 0.8342 0.0773
0.85 282.0 2.1734 0.6547 0.1604
0.85 294.0 0.986 0.6604 0.0775
0.85 306.0 -0.1638 0.7249 0.0323
0.95 258.0 -0.1352 0.7834 0.0316
0.95 306.0 -0.2124 0.7785 0.0337