Quark effective theory at large orders in 1/m

S. Balk, J. G. Körner, D. Pirjol

Research output: Contribution to journalArticlepeer-review

49 Scopus citations

Abstract

The existing derivations of a heavy quark effective theory (HQET) are presented from a unified point of view. It is shown that a correct normalization of the heavy quark field in the effective theory is crucial for making explicit the mass dependence of the matrix elements. A possible variant of HQET which satisfies this requirement and which is constructed from a sequence of Foldy-Wouthuysen transformations is presented. The renormalization of the resulting effective Lagrangian to order 1/m2 is performed including also effects arising from vacuum polarization.

Original languageEnglish
Pages (from-to)499-527
Number of pages29
JournalNuclear Physics B
Volume428
Issue number1-2
DOIs
StatePublished - 10 Oct 1994

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