CLAS Physics Database

Measurement E151M2676

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: 0.9313
Q2: 0.2915 GeV2
W: 1235.0 GeV
Ebeam: 1.3383 GeV
ε: 0.7954

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] ALU uncertainty syst. uncert.
0.55 270.0 -0.2056 0.2604 0.0303
0.75 294.0 0.5189 0.2641 0.0317
0.85 90.0 0.0854 0.277 0.03
0.85 126.0 -0.1759 0.2761 0.0302
0.45 282.0 0.0261 0.3967 0.03
0.55 270.0 0.3693 0.3275 0.0309
0.65 258.0 0.4642 0.2803 0.0314
0.65 270.0 -0.0259 0.3695 0.03
0.65 282.0 -0.5592 0.2562 0.032
0.85 102.0 0.0254 0.3815 0.03
0.85 114.0 -0.1362 0.3787 0.0301