CLAS Physics Database

Measurement E151M2930

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: 0.2087
Q2: 0.0348 GeV2
W: 1265.0 GeV
Ebeam: 1.9889 GeV
ε: 0.9697

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty syst. uncert.
0.55 90.0 0.2661 0.249 0.0305
0.65 258.0 -0.0455 0.2816 0.03
0.75 246.0 -0.2765 0.2221 0.0305
0.75 258.0 0.2041 0.2467 0.0303
0.75 270.0 0.061 0.2801 0.03
0.85 126.0 0.1903 0.2669 0.0302
0.85 138.0 0.22 0.262 0.0303
0.85 162.0 0.2102 0.2792 0.0303
0.85 246.0 -0.3412 0.2497 0.0308