CLAS Physics Database

Measurement E151M9

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: 0.3053
Q2: 0.0348 GeV2
W: 1205.0 GeV
Ebeam: 1.0539 GeV
ε: 0.9162

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] AUL uncertainty
0.45 282.0 -0.0204 0.4466
0.55 258.0 -0.1125 0.4003
0.55 270.0 0.2269 0.3761
0.55 282.0 -0.7785 0.3444
0.65 258.0 -0.439 0.3447
0.65 270.0 -0.0034 0.2842
0.75 246.0 -1.036 0.3499
0.75 258.0 0.1602 0.4087
0.75 270.0 -0.0723 0.3785
0.85 138.0 1.0086 0.5441
0.85 150.0 0.7962 0.4231
0.85 162.0 -0.0223 0.4465
0.85 174.0 -0.373 0.3061
0.85 186.0 0.2089 0.3485
0.85 198.0 -0.1159 0.3131
0.85 210.0 -0.0053 0.437
0.85 222.0 -0.2973 0.4061
0.95 174.0 0.1896 0.4183