Downloads provided by UsageCounts
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
High Energy Physics - Phenomenology, High Energy Physics - Phenomenology (hep-ph), Física, FOS: Physical sciences
High Energy Physics - Phenomenology, High Energy Physics - Phenomenology (hep-ph), Física, FOS: Physical sciences
| selected citations These citations are derived from selected sources. This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | 0 | |
| 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. | Average | |
| influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | Average | |
| impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network. | Average |
| views | 22 | |
| downloads | 46 |

Views provided by UsageCounts
Downloads provided by UsageCounts