QCD Calculations of Radiative B Decays

Abstract

The current status of B -> Xs gamma decay rate calculations is summarized. Missing ingredients at the NNLO level are listed. The global normalization factor and non-perturbative effects are discussed. Arguments are presented that results for the cutoff-enhanced perturbative corrections have been misused in Ref. [15] by applying them in the region E_gamma \in [1.0, 1.6] GeV, which means that the corresponding numerical effect on BR(B -> Xs gamma, E_gamma > 1.6 GeV) is unreliable.

6 pages, 4 figures, contribution to the Proceedings of the IXth International Conference on Heavy Quarks and Leptons (HQL 2008), Melbourne, Australia, June 5-9, 2008. Note added and refs updated in v2

References in corpus (8)

• Averages of b-hadron and c-hadron Properties at the End of 2007
• Treating the b quark distribution function with reliable uncertainties
• Mass effects in muon and semileptonic b -> c decays
• Measurement of the B --> X_s gamma Branching Fraction and Photon Energy Spectrum using the Recoil Method
• NNLO fermionic corrections to the charm quark mass dependent matrix elements in B -> X_s gamma
• Normalizing inclusive rare B decays
• Fermionic corrections to the interference of the electro- and chromomagnetic dipole operators in anti-B --> X(s) gamma at O(alpha(s)**2)
• Improved Measurement of Inclusive Radiative B-meson decays

Cited by in corpus (9)

• The Physics of the B Factories
• Hierarchical Soft Terms and Flavor Physics
• The B -> Xs gamma Rate and CP Asymmetry within the Aligned Two-Higgs-Doublet Model
• The Minimal Flavour Violation benchmark in view of the latest LHCb data
• Power suppressed effects in B-> X_s gamma at O(alpha_s)
• Constraining new physics with B to K* mu+ mu- in the early LHC era
• B -> Xs gamma - Current Status
• Heavy fermions and two loop electroweak corrections to $b\to s+\gamma$
• Precision calculations in BR(anti-B --> Xs gamma)