Unravelling duality violations in hadronic tau decays
Abstract
With the help of a physically motivated ansatz, which is fitted to the data, we estimate the size of possible duality violations in hadronic tau decay. The result is that the uncertainty associated with these violations could impact the αs determination from the total decay width at a level which we estimate to be δ αs (mτ ) ∼ 0.003 - 0.010. Consequently, it cannot be neglected.
- Publication:
-
Quark Confinement and the Hadron Spectrum
- Pub Date:
- 2008
- DOI:
- 10.22323/1.077.0073
- Bibcode:
- 2008qchs.confE..73P