CLAS Physics Database

Measurement E151M827

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: 0.3993
Q2: 0.2915 GeV2
W: 1445.0 GeV
Ebeam: 2.2596 GeV
ε: 0.8741

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] AUL uncertainty syst. uncert.
0.75 90.0 -0.0926 1.0533 0.0312
0.95 306.0 1.1217 2.8828 0.1078
0.65 114.0 -0.2998 0.6971 0.0359
0.75 90.0 -0.1359 0.6729 0.0313
0.75 270.0 -0.6651 0.5949 0.053
0.85 222.0 0.441 0.842 0.0417
0.85 234.0 0.3344 0.7517 0.0372
0.85 258.0 1.3997 0.7247 0.0966
0.85 282.0 1.6856 0.7197 0.1146
0.95 294.0 1.6304 1.1485 0.1111