New perturbation expansions in quantum chromodynamics and the determination of alpha(s)

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F10%3A00356868" target="_blank" >RIV/68378271:_____/10:00356868 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

New perturbation expansions in quantum chromodynamics and the determination of alpha(s)

Original language description

We consider a new class of perturbation expansions which in a systematic way incorporate the available information about the divergent character of the perturbation series in QCD. The new expansion functions, which replace the powers of the coupling, aredefined by the analytic continuation in the Borel plane, achieved through an optimal conformal mapping. We consider several possibilities of implementing the known behaviour of the Borel transform, which have the same convergence rate, but differ at loworders. The new expansions allow a precise determination of the strong coupling $/alpha_s$ from the hadronic decays of the tau lepton.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BF - Elementary particle theory and high energy physics

OECD FORD branch

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Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2010

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Romanian Journal of Physics

ISSN

1221-146X

e-ISSN

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Volume of the periodical

55

Issue of the periodical within the volume

5-6

Country of publishing house

RO - ROMANIA

Number of pages

11

Pages from-to

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UT code for WoS article

000280968300007

EID of the result in the Scopus database

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