Resolved $1/m_b$ contributions to $\bar{B}\to X_{s,d}{\ell }^{+}{\ell }^{-}$ and $\bar{B}\to X_s\gamma$

Abstract

In view of the importance of the nonperturbative resolved contributions for the overall uncertainties of the two inclusive penguin decays $\bar{B}\to X_s\gamma$ and $\bar{B}\to X_{s,d}{\ell }^{+}{\ell }^{-}$ we reanalyse these contributions using new estimates of moments of the subleading shape functions and of other input parameters. Within a systematic approach we find a significant reduction of the nonperturbative uncertainties in the inclusive decay $\bar{B}\to X_{s,d}{\ell }^{+}{\ell }^{-}$, but a much less pronounced reduction in the inclusive decay $\bar{B}\to X_s\gamma$ compared to a recent analysis on the resolved contributions to the inclusive decay $\bar{B}\to X_s\gamma$. We identify the reasons for this discrepancy.

minor changes, matches published version

References in corpus (12)

• Updated NNLO QCD predictions for the weak radiative B-meson decays
• Treating the b quark distribution function with reliable uncertainties
• Higher Order Power Corrections in Inclusive B Decays
• Long-Distance Dominance of the CP Asymmetry in B->X_{s,d}+gamma Decays
• Enhanced Non-local Power Corrections to the B->X_s+gamma Decay Rate
• Improved Estimates for the Parameters of the Heavy Quark Expansion
• Precision Global Determination of the $B\to X_s\gamma$ Decay Rate
• Nonperturbative m_X cut effects in B -> Xs l+ l- observables
• Inclusive B -> X_s l^+ l^-: Complete angular analysis and a thorough study of collinear photons
• Subleading Power Factorization in $\bar{B}\to X_s{\ell }^{+}{\ell }^{-}$
• Revisiting Uraltsev's BPS limit for Heavy Quarks
• Resolved Power Corrections to the Inclusive Decay $\bar{B}\to X_s{\ell }^{+}{\ell }^{-}$

Cited by in corpus (6)

• Precision Global Determination of the $B\to X_s\gamma$ Decay Rate
• Refactorisation in subleading $\bar{B}\to X_s\gamma$
• The Q_{1,2}-Q_7 interference contributions to b -> s gamma at O(alpha_s^2) for the physical value of m_c
• Theory of Inclusive B Decays
• Update of the nonlocal sub-leading $O_1$-$O_7$ contribution to $\bar{B}\to X_s\gamma$ at LO
• Multi-parton contributions to $\bar{B}\to X_s\gamma$ at NLO