Instanton Contribution to $B\to X_s\gamma$ Decay

Abstract

We study instanton effects on $B\to X_s\gamma$ decay using the heavy quark effective field theory and the operator product expansion. In the dilute gas approximation the effect is negligibly small. This is in contrast to the result of the instanton effect in inclusive semileptonic $b\to u$ decay but similar to the inclusive hadronic $\tau$ decay. We discuss the similarities and differences of the $B\to X_s\gamma$ decay compared to inclusive hadronic $\tau$ decay and semileptonic $B$ decay.

REVTEX, 15 pages + 3 postscript figures appended, SNUTP 94-54

References in corpus (4)

• Theoretical Uncertainties and Phenomenological Aspects of $B\to X_s\gamma$ Decay
• Analysis of the Photon Spectrum in Inclusive $B\to X_s\gamma$ Decays
• Nonperturbative Contributions to the Inclusive Rare Decays $B\to X_s\gamma$ and $B\to X_s{\ell }^{+}{\ell }^{-}$
• Small-Size Instanton Corrections to the $\tau$ Hadronic Width

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• Revisiting quark-hadron duality for heavy meson non-leptonic decays in two-dimensional QCD
• Quark-Hadron Duality Violations and Higher-Order $1/m_b$ Corrections in Inclusive Semileptonic $B$ Decays
• Is right-handed current contribution to $\bar{B}\to X_{u}l\nu$ decays corrected by non-trivial vacuum in QCD?
• $B\to X_c\ell \bar{\nu }$ Decay as a Probe of Complex Conjugate Poles