CLAS Physics Database

Measurement E151M2731

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: 0.4846
Q2: 0.205 GeV2
W: 1325.0 GeV
Ebeam: 1.3383 GeV
ε: 0.7833

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty syst. uncert.
0.65 258.0 0.2209 0.2591 0.0303
0.75 138.0 -0.5726 0.258 0.0321
0.75 246.0 0.248 0.2546 0.0304
0.85 102.0 0.2023 0.2581 0.0303
0.85 138.0 -0.0082 0.2847 0.03
0.85 294.0 0.2556 0.2788 0.0304
0.65 282.0 -0.3692 0.4615 0.0309
0.75 114.0 -0.3963 0.4114 0.031
0.85 114.0 0.7773 0.1675 0.0338
0.85 282.0 -0.4461 0.351 0.0313