| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 8185929 | Nuclear Physics B - Proceedings Supplements | 2010 | 4 Pages |
Abstract
We present a modification of the standard method of evaluating the semihadronic tau decay width. The method is based on a derivative expansion for the Adler function rather than the standard series in powers of the strong coupling. The extracted QCD coupling at the tau mass scale is by 2% lower than the “contour improved” value. We find αs(MZ2)=0.1211±0.0010.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Nuclear and High Energy Physics
Authors
Gorazd CvetiÄ, Marcelo Loewe, Cristian V. MartÃnez, Cristián Valenzuela,