CLAS Physics Database

Measurement E151M775

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: 0.7386
Q2: 0.348 GeV2
W: 1325.0 GeV
Ebeam: 2.2596 GeV
ε: 0.9017

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] AUL uncertainty syst. uncert.
0.85 246.0 -0.6143 1.3988 0.0641
0.75 258.0 0.7343 0.5666 0.0568
0.85 78.0 0.7081 0.6035 0.0553
0.85 102.0 0.0627 0.6362 0.0303
0.85 270.0 -0.4663 0.5691 0.0429
0.85 294.0 -0.6871 0.4379 0.0542