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The Determination of $\alpha_s$ from Tau Decays Revisited
We revisit the determination of alpha_s(m_tau) using a fit to inclusive tau hadronic spectral moments in light of (1) the recent calculation of the fourth-order perturbative coefficient K_4 in the expansion of the Adler function, (2) new precision measurements from BABAR of e+e- annihilation cross s...
| Autores principales: | , , , , |
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| Lenguaje: | eng |
| Publicado: |
2008
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| Materias: | |
| Acceso en línea: | https://dx.doi.org/10.1140/epjc/s10052-008-0666-7 http://cds.cern.ch/record/1093186 |