Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/49798
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Type: | Journal article |
Title: | αs(MZ²) from hadronic τ decays |
Other Titles: | alpha(s) (M-Z(2)) from hadronic tau decays |
Author: | Maltman, Kim Yavin, T. |
Citation: | Physical Review D, 2008; 78(9):094020 |
Publisher: | American Physical Society |
Issue Date: | 2008 |
ISSN: | 1550-7998 |
School/Discipline: | School of Chemistry and Physics : Physics and Mathematical Physics |
Statement of Responsibility: | K. Maltman, T. Yavin |
Abstract: | We perform an extraction of αs based on sum rules involving isovector hadronic τ decay data. The particular sum rules employed are constructed specifically to suppress contributions associated with poorly known higher dimension condensates, and hence reduce theoretical systematic uncertainties associated with the treatment of such contributions which are shown to be present in earlier related analyses. Running our results from the nf=3 to nf=5 regime we find αs(MZ2)=0.1187±0.0016, in excellent agreement with the recently updated global fit to electroweak data at the Z scale and other high-scale direct determinations. |
Rights: | ©2008 American Physical Society |
DOI: | 10.1103/PhysRevD.78.094020 |
Appears in Collections: | Chemistry and Physics publications |
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