Abstract
A combined analysis of the space- and time-like experimental data for the η transition form factor is performed in a model-independent way by means of rational approximants. The recent measurement of the e+ e- invariant mass spectrum of the η → e+ e- γ decay provided by the A2 Collaboration allowed us to extract the most precise and up-to-date slope and curvature parameters of the form factor. The impact of this new analysis on the η-η' mixing parameters and the VPγ couplings is also discussed.
| Original language | English |
|---|---|
| Pages (from-to) | 462-469 |
| Journal | Journal of University of Science and Technology of China |
| Volume | 46 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - 1 Jun 2016 |
Keywords
- Rational approximants
- Slope and curvature parameters;η-ηmixing
- Space- and time-like data analysis
- V→Pγradiative decays
- ηtransition form factor