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DIGITAL.CSIC
Conference object . 2010
Data sources: DIGITAL.CSIC
https://dx.doi.org/10.48550/ar...
Article . 2010
License: arXiv Non-Exclusive Distribution
Data sources: Datacite
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Alpha_s Determination from Tau Decays: Theoretical Status

Authors: Pich Zardoya, Antonio;

Alpha_s Determination from Tau Decays: Theoretical Status

Abstract

The total tau hadronic width can be accurately calculated using analyticity and the operator product expansion. The result turns out to be very sensitive to the value of alpha(s)(m(tau)(2)), providing a precise determination of the strong coupling constant. The theoretical description of this observable is updated, including the recently computed O(alpha(4)(s)) contributions. The experimental determination of as alpha(s)(m(tau)(2)) and its actual uncertainties are discussed.

This work has been supported in part by the EU Contract MRTNCT- 2006-035482 (FLAVIAnet), by MICINN, Spain (grants FPA2007-60323 and Consolider-Ingenio 2010 CSD2007-00042 –CPAN–) and by Generalitat Valenciana (Prometeo/2008/069, ACOMP/2009/312).

Topical Workshop on Low Energy Constraints on Extensions of the Standard Model. Kazimierz, POLAND, JUL 23-27, 2009

Country
Spain
Keywords

High Energy Physics - Phenomenology, High Energy Physics - Phenomenology (hep-ph), Física, FOS: Physical sciences

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popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
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