Instanton contribution to 431-1431-1431-1decay

Junegone Chay, Soo Jong Rey

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)


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
Issue number3
Publication statusPublished - 1995 Sept

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)


Dive into the research topics of 'Instanton contribution to 431-1431-1431-1decay'. Together they form a unique fingerprint.

Cite this