Matching the heavy-quark fields in QCD and HQET at four loops

Andrey G. Grozin; Peter Marquard; Alexander V. Smirnov; Vladimir A. Smirnov; Matthias Steinhauser

doi:10.1103/PhysRevD.102.054008

Matching the heavy-quark fields in QCD and HQET at four loops

Andrey G. Grozin, Peter Marquard, Alexander V. Smirnov, Vladimir A. Smirnov, Matthias Steinhauser

Результат исследования: Научные публикации в периодических изданиях › статья › рецензирование

2 Цитирования (Scopus)

Аннотация

The QCD/HQET matching coefficient for the heavy-quark field is calculated up to four loops. It must be finite; this requirement produces analytical results for some terms in the four-loop on-shell heavy-quark field renormalization constant which were previously only known numerically. The effect of a nonzero lighter-flavor mass is calculated up to three loops. A class of on-shell integrals with two masses is analyzed in detail. By specifying our result to QED, we obtain the relation between the electron field and the Bloch-Nordsieck field with four-loop accuracy.

Язык оригинала	английский
Номер статьи	054008
Число страниц	22
Журнал	Physical Review D
Том	102
Номер выпуска	5
DOI	https://doi.org/10.1103/PhysRevD.102.054008
Состояние	Опубликовано - 1 сен 2020

Доступ к документу

10.1103/PhysRevD.102.054008

Link to publication in Scopus

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Цитировать

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Matching the heavy-quark fields in QCD and HQET at four loops. / Grozin, Andrey G.; Marquard, Peter; Smirnov, Alexander V.; Smirnov, Vladimir A.; Steinhauser, Matthias.

В: Physical Review D, Том 102, № 5, 054008, 01.09.2020.

Результат исследования: Научные публикации в периодических изданиях › статья › рецензирование

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