KEK Theory Seminar (Dr. Hiromasa Takaura)

Category
Start2018/04/24(Tue)11:00 AM
End2018/04/24(Tue)12:00 PM
VenueKenkyu-Honkan 1F, Meeting Room 1
TitleDetermination of αs from static QCD potential with renormalon subtraction
SpeakerDr. Hiromasa Takaura ( Kyushu University )
Language英語/English
Contacttsuyama-AT-post.kek.jp
Website
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Abstract

(ABSTRACT)

The strong coupling constant αs is a fundamental parameter in the standard model and requires to be determined with higher accuracy. We determine αs from static QCD potential with a new method where a renormalon uncertainty, which is an inevitable error in perturbative predictions, is subtracted from a theoretical prediction. We obtain αs(MZ^2)=0.1178+0.0016/-0.0015, which is consistent with the PDG result.

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