Update of the nonlocal sub-leading $O_1$-$O_7$ contribution to $\bar{B}\to X_s\gamma$ at LO

Abstract

In all previous calculations of the non-local sub-leading contribution to the inclusive penguin decay $\bar{B}\to X_s\gamma$ due to the interference of the electroweak operators $O_1^c$ - $O_{7\gamma }$ the local Voloshin term was subtracted. In view of the ongoing analysis at order ${\alpha }_s$, we present a calculation of the complete non-local contribution which takes into account the high correlation between the uncertainties of the local Voloshin and the non-local term of the previous analyses. The new calculation has a high impact on the range of the non-local contribution.

9 pages, latex, new version corresponds to the version to be published in PRD

References in corpus (8)

• Long-Distance Dominance of the CP Asymmetry in B->X_{s,d}+gamma Decays
• Next-to-leading power endpoint factorization and resummation for off-diagonal "gluon" thrust
• Enhanced Non-local Power Corrections to the B->X_s+gamma Decay Rate
• Factorization at Subleading Power and Endpoint Divergences in $h\to \gamma \gamma$ Decay: II. Renormalization and Scale Evolution
• Refactorisation in subleading $\bar{B}\to X_s\gamma$
• Subleading Power Factorization in $\bar{B}\to X_s{\ell }^{+}{\ell }^{-}$
• Resolved $1/m_b$ contributions to $\bar{B}\to X_{s,d}{\ell }^{+}{\ell }^{-}$ and $\bar{B}\to X_s\gamma$
• Renormalisation group evolution of the shape function $g_{17}$ in $\bar{B}\to X_s\gamma$ and $\bar{B}\to X_s{\ell }^{+}{\ell }^{-}$ at subleading power