CLAS Physics Database

Measurement E151M899

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: 0.0738
Q2: 0.0844 GeV2
W: 1625.0 GeV
Ebeam: 2.2596 GeV
ε: 0.845

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] AUL uncertainty syst. uncert.
0.65 126.0 -1.2156 0.6235 0.1161
0.65 282.0 1.3749 0.7197 0.1304
0.65 294.0 -0.7016 0.538 0.0714
0.75 282.0 -0.1806 0.5213 0.0343
0.75 294.0 1.5714 0.7108 0.1481
0.85 102.0 -2.2861 0.5941 0.2131
0.85 114.0 -0.4997 0.9312 0.055
0.85 246.0 0.3732 0.8599 0.0457
0.55 282.0 -0.155 0.6482 0.0317
0.65 114.0 1.3561 0.7513 0.0939
0.65 210.0 -0.0296 0.8203 0.0301
0.65 222.0 1.4198 0.8598 0.0979
0.65 294.0 -0.9039 0.5248 0.0665
0.75 126.0 -0.931 0.7062 0.0681
0.75 222.0 -0.3728 0.6942 0.0387
0.75 234.0 -0.2056 0.7724 0.0329
0.75 282.0 -0.2923 0.6141 0.0356
0.85 102.0 0.648 0.8253 0.052
0.85 114.0 0.6731 0.7838 0.0534
0.85 222.0 1.1642 0.9069 0.0821
0.85 234.0 1.3064 0.8475 0.0908
0.95 246.0 -0.2023 1.2638 0.0328