Instanton contribution to 431-1431-1431-1decay

Junegone Chay, Soo Jong Rey

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

We study instanton effects on inclusive semileptonic b→u decay using the heavy quark effective field theory and the operator product expansion. The effect contributes not only to the hadronic matrix element but also to the coefficient functions in the operator product expansion. We find that the coefficient function is singular near the boundaries of the phase space. In order to use perturbative QCD reliably, it is necessary to introduce smearing near the boundary. However the instanton contribution to b→c decay seems negligibly small.

Original languageEnglish
Pages (from-to)431-438
Number of pages8
JournalZeitschrift für Physik C Particles and Fields
Volume68
Issue number3
DOIs
Publication statusPublished - 1995 Sep 1

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instantons
operators
expansion
decay
coefficients
products
Mathematical operators
quantum chromodynamics
quarks
matrices

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Instanton contribution to 431-1431-1431-1decay. / Chay, Junegone; Rey, Soo Jong.

In: Zeitschrift für Physik C Particles and Fields, Vol. 68, No. 3, 01.09.1995, p. 431-438.

Research output: Contribution to journalArticle

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