αs from τ: a discussion of theoretical errors

Autor:	G. Altarelli
Rok vydání:	1995
Předmět:	Quantum chromodynamics Physics Nuclear and High Energy Physics Theoretical physics Theoretical computer science Strong coupling Sum rule in quantum mechanics Atomic and Molecular Physics and Optics
Zdroj:	Nuclear Physics B - Proceedings Supplements. 40:59-68
ISSN:	0920-5632
DOI:	10.1016/0920-5632(95)00130-2
Popis:	Nominal errors on the determination of αs(mZ) from τ decay are so small that it may appear that this is the best method of measuring the strong coupling. While I agree that this way of determining αs(mZ) is a very good one, I think that the theoretical errors involved are larger than often asssumed, even if the QCD sum rule framework is accepted.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::28ff40709758d6e8b17b8aa0c1cf69ec https://doi.org/10.1016/0920-5632(95)00130-2 Zobrazit plný text záznamu Full Text from ScienceDirect