αs(MZ²) from hadronic τ decays

dc.contributor.author	Maltman, Kim	en
dc.contributor.author	Yavin, T.	en
dc.contributor.school	School of Chemistry and Physics : Physics and Mathematical Physics	en
dc.date.issued	2008	en
dc.description.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.	en
dc.description.statementofresponsibility	K. Maltman, T. Yavin	en
dc.identifier.citation	Physical Review D, 2008; 78(9):094020	en
dc.identifier.doi	10.1103/PhysRevD.78.094020	en
dc.identifier.issn	1550-7998	en
dc.identifier.uri	http://hdl.handle.net/2440/49798
dc.language.iso	en	en
dc.publisher	American Physical Society	en
dc.rights	©2008 American Physical Society	en
dc.title	αs(MZ²) from hadronic τ decays	en
dc.title.alternative	alpha(s) (M-Z(2)) from hadronic tau decays	en
dc.type	Journal article	en

Files

Now showing 1 - 1 of 1