CLAS Physics Database

Measurement E151M142

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: 0.1998
Q2: 0.1205 GeV2
W: 1385.0 GeV
Ebeam: 1.0539 GeV
ε: 0.6317

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] AUL uncertainty
0.55 246.0 -0.4381 0.7565
0.55 258.0 -0.1539 0.7196
0.65 234.0 -0.532 0.7172
0.65 246.0 -0.56 0.6487
0.65 258.0 0.1178 0.6905
0.65 270.0 -0.6027 0.6699
0.75 138.0 0.9262 0.9048
0.75 174.0 -0.4688 0.8007
0.75 222.0 -0.9458 0.7529
0.75 246.0 -0.9748 0.5375
0.75 258.0 0.0493 0.7441
0.75 270.0 -0.908 0.5385
0.75 282.0 -0.57 0.7257
0.85 138.0 0.2403 0.9115
0.85 234.0 -0.2353 0.7757
0.85 246.0 0.0914 0.6817
0.85 258.0 -0.5533 0.5197
0.85 270.0 0.0562 0.5243
0.85 282.0 1.0835 0.7413
0.95 258.0 -0.4218 0.6005