Reevaluating Uncertainties in $\bar{B}\to X_s\gamma$ Decay

Abstract

The rare decay $\bar{B}\to X_s\gamma$ is an important probe of physics beyond the standard model. The largest uncertainty on the total rate and the CP asymmetry arises from resolved photon contributions. These appear first at order $1/m_b$ and are related to operators other than $Q_{7\gamma }$ in the effective weak Hamiltonian. One of the three leading contributions, $Q_1^q-Q_{7\gamma }$, is described by a non-local function whose moments are related to HQET parameters. We use recent progress in our knowledge of these parameters to reevaluate the resolved photon contribution to $\bar{B}\to X_s\gamma$ total rate and CP asymmetry.

arXiv commentText and references added. Journal version

References in corpus (28)

• Averages of $b$-hadron, $c$-hadron, and $\tau$-lepton properties as of summer 2016
• Updated NNLO QCD predictions for the weak radiative B-meson decays
• NNLO QCD corrections to the B -> X_s gamma matrix elements using interpolation in m_c
• Treating the b quark distribution function with reliable uncertainties
• Factorization and Shape-Function Effects in Inclusive B-Meson Decays
• Corrections of Order ${\Lambda }_{QCD}^2/m_c^2$ to Inclusive Rare B Decays
• Taming the higher power corrections in semileptonic B decays
• Factorization at Subleading Power and Irreducible Uncertainties in $\bar{B}\to X_s\gamma$ Decay
• Order 1/m_b^3 corrections to B\to X_c\ell\barνdecay and their implication for the measurement of \barΛand λ_1
• $O(m_c^{-2})$ nonperturbative corrections to the inclusive rate of the decay $B\to X_s\gamma$
• Subleading Shape Functions in Inclusive B Decays
• Measurement of the B --> X_s gamma Branching Fraction and Photon Energy Spectrum using the Recoil Method
• Higher Order $1/m$ Corrections at Zero Recoil
• Higher Order Power Corrections in Inclusive B Decays
• Long-Distance Dominance of the CP Asymmetry in B->X_{s,d}+gamma Decays
• Comment on nonperturbative effects in $B\to X_s\gamma$
• Introduction to Soft-Collinear Effective Theory
• Comment On Nonperturbative O(1/m_c^2) Corrections to B -> X_s gamma
• Enhanced Non-local Power Corrections to the B->X_s+gamma Decay Rate
• Advanced Predictions for Moments of the B->X_s+gamma Photon Spectrum
• Hilbert Series and Operator Basis for NRQED and NRQCD/HQET
• Charm Quark Mass from Inclusive Semileptonic B Decays
• Leading logarithms of the $b$ quark mass in inclusive $B\to X_s\gamma$ decay
• Improved Estimates for the Parameters of the Heavy Quark Expansion
• On HQET and NRQCD Operators of Dimension 8 and Above
• B -> Xs gamma - Current Status
• Is $B\to X_s\gamma$ equal to $b\to s\gamma$ ? Spectator contributions to rare inclusive B decays
• Revisiting Uraltsev's BPS limit for Heavy Quarks

Cited by in corpus (14)

• Towards B -> X_s gamma at the NNLO in QCD without interpolation in m_c
• The Flavor of UV Physics
• Precision Global Determination of the $B\to X_s\gamma$ Decay Rate
• CP asymmetries of $\overline{B}\to X_s/X_d\gamma$ in models with three Higgs doublets
• Resolved $1/m_b$ contributions to $\bar{B}\to X_{s,d}{\ell }^{+}{\ell }^{-}$ and $\bar{B}\to X_s\gamma$
• The Q_{1,2}-Q_7 interference contributions to b -> s gamma at O(alpha_s^2) for the physical value of m_c
• 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
• Theory of Inclusive B Decays
• Top quark effective couplings from top-pair tagged photoproduction in $p{e}^{-}$ collisions
• Semileptonic decays of heavy mesons with artificial neural networks
• CP-Violation in the 3-Higgs Doublet Model: CP-Asymmetries from Charged Higgs Bosons and Electric Dipole Moments
• Multi-parton contributions to $\bar{B}\to X_s\gamma$ at NLO
• Update of the nonlocal sub-leading $O_1$-$O_7$ contribution to $\bar{B}\to X_s\gamma$ at LO
• On charm-mass dependent NNLO corrections to B -> Xs gamma