Instanton contribution to 431-1431-1431-1decay

Junegone Chay; Soo Jong Rey

doi:10.1007/BF01620717

Instanton contribution to 431-1431-1431-1decay

Junegone Chay, Soo Jong Rey

Research output: Contribution to journal › Article › peer-review

7 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 language	English
Pages (from-to)	431-438
Number of pages	8
Journal	Zeitschrift für Physik C Particles and Fields
Volume	68
Issue number	3
DOIs	https://doi.org/10.1007/BF01620717
Publication status	Published - 1995 Sept

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1007/BF01620717

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title = "Instanton contribution to 431-1431-1431-1decay",

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.",

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AU - Rey, Soo Jong

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AB - 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.

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DO - 10.1007/BF01620717

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JO - Zeitschrift für Physik C Particles and Fields

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ER -

Instanton contribution to 431-1431-1431-1decay

Abstract

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