CLAS Physics Database

Measurement E151M2604

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: ALU
εL: 0.1275
Q2: 0.0844 GeV2
W: 1415.0 GeV
Ebeam: 1.0539 GeV
ε: 0.6236

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty
0.15 42.0 0.1182 0.242
0.35 54.0 0.4018 0.226
0.55 234.0 0.1385 0.2352
0.55 246.0 0.0356 0.2109
0.55 258.0 -0.4853 0.1777
0.65 138.0 -0.0585 0.2637
0.65 234.0 0.6195 0.216
0.65 246.0 -0.2584 0.2191
0.65 258.0 0.1182 0.2107
0.65 270.0 -0.1249 0.214
0.75 150.0 0.4439 0.218
0.75 234.0 -0.3426 0.2104
0.75 246.0 -0.0198 0.1851
0.75 258.0 -0.2037 0.1862
0.75 270.0 -0.4251 0.1825
0.85 234.0 0.2808 0.2363
0.85 246.0 0.1646 0.166
0.85 258.0 -0.3149 0.1858
0.85 270.0 -0.0866 0.1959
0.85 282.0 -0.1621 0.2266
0.95 258.0 -0.4625 0.2326