Completing the NLO QCD calculation of B -> Xs gamma

Abstract

We evaluate two-loop b -> s gamma matrix elements of all the four-quark operators containing no derivatives. Contrary to previous calculations, no expansion in the mass ratio mc/mb is performed, and all the possible Dirac and flavor structures are included. Consequently, we are able to provide the last item in the NLO analysis of B -> Xs gamma that has been missing so far, namely the two-loop matrix elements of the QCD-penguin operators. Due to smallness of the Wilson coefficients of those operators in the Standard Model, their effect on the branching ratio is small: a reduction by roughly 1%. We find BR[ B -> Xs gamma]_{E_gamma > 1.6 GeV} = (3.57 +_ 0.30)*10^{-4}.

18 pages, 2 figures, uses graphicx

References in corpus (3)

• Quark mass effects in B -> Xs gamma
• Complete electroweak matching for radiative B decays
• Two-Loop Matrix Element of the Current-Current Operator in the Decay B -> X_s gamma

Cited by in corpus (114)

• Particle Dark Matter: Evidence, Candidates and Constraints
• DarkSUSY: Computing Supersymmetric Dark Matter Properties Numerically
• The Next-to-Minimal Supersymmetric extension of the Standard Model reviewed
• SuperIso v3.0: A program for calculating flavor physics observables in 2HDM and supersymmetry
• NNLO QCD corrections to the B -> X_s gamma matrix elements using interpolation in m_c
• Flavor Physics in the Quark Sector
• Lattice QCD calculation of form factors describing the rare decays $B\to K^{\ast }{\ell }^{+}{\ell }^{-}$ and $B_s\to \varphi {\ell }^{+}{\ell }^{-}$
• Probing New Physics Via the Transverse Amplitudes of B0-> K*0(-> K- pi+) l+l- at Large Recoil
• Anomalous Dimension Matrix for Radiative and Rare Semileptonic B Decays up to Three Loops
• B->V gamma Beyond QCD Factorisation
• Comprehensive Bayesian Analysis of Rare (Semi)leptonic and Radiative B Decays
• Present Status of Inclusive Rare B Decays
• Complete NNLO QCD Analysis of B -> X_s l^+ l^- and Higher Order Electroweak Effects
• The Impact of Universal Extra Dimensions on B -> X_s gamma, B -> X_s gluon, B -> X_s mu^+ mu^-, K_L -> pi^0 e^ +e^-, and epsilon'/epsilon
• SUSY-induced FCNC top-quark processes at the Large Hadron Collider
• Renormalization-Group Improved Calculation of the B->Xs+gamma Branching Ratio
• Towards B -> X_s gamma at the NNLO in QCD without interpolation in m_c
• Fit to Moments of Inclusive B->Xc lv and B-> Xs gamma Decay Distributions using Heavy Quark Expansions in the Kinetic Scheme
• Three-loop matching of the dipole operators for b -> s gamma and b -> s g
• The rare decay B --> X_s l^+ l^- to NNLL precision for arbitrary dilepton invariant mass
• Constraining the Two-Higgs-Doublet-Model parameter space
• Untagged B -> X_(s+d) gamma CP asymmetry as a probe for new physics
• Prospects for charged Higgs searches at the LHC
• Measurements of the B -> X_s gamma Branching Fraction and Photon Spectrum from a Sum of Exclusive Final States
• Three-Loop Mixing of Dipole Operators
• Determining the sign of the b -> s gamma amplitude
• Deciphering top flavor violation at the LHC with B factories
• The Role of Antimatter Searches in the Hunt for Supersymmetric Dark Matter
• Dark Matter And $B_s\to {\mu }^{+}{\mu }^{-}$ With Minimal $S{O}_{10}$ Soft SUSY Breaking
• TeV Scale Mirage Mediation and Natural Little SUSY Hierarchy
• The photon energy spectrum in B-> X_s + γin perturbative QCD through O(α_s^2)
• Radiative and Electroweak Penguin Decays of B Mesons
• Can the Two-Higgs-Doublet Model Survive the Constraint from the Muon Anomalous Magnetic Moment as Suggested?
• Fermionic NNLL corrections to b -> s γ
• Upper Bounds on Rare K and B Decays from Minimal Flavour Violation
• Phenomenological viability of neutralino dark matter in the NMSSM
• SusyBSG: a fortran code for BR[B -> Xs gamma] in the MSSM with Minimal Flavor Violation
• Probing the Flavour Structure of Supersymmetry Breaking With Rare B-Processes - A Beyond Leading Order Analysis
• Towards $B\to V\gamma$ Decays at NNLO in SCET
• NNLO fermionic corrections to the charm quark mass dependent matrix elements in B -> X_s gamma
• On the photon energy moments and their `bias' corrections in B -> X_s+γ
• New Constraints on SUSY Flavour Mixing in Light of Recent Measurements at the Tevatron
• Natural Multi-Higgs Model with Dark Matter and CP Violation
• Probing the charged Higgs boson at the LHC in the CP-violating type-II 2HDM
• The electromagnetic dipole operator effect on B -> Xs gamma at O(alpha_s^2)
• WMAP Dark Matter Constraints and Yukawa Unification in SUGRA models with CP Phases
• Mass Spectrum in R-Parity Violating mSUGRA and Benchmark Points
• Direct versus indirect detection in mSUGRA with self-consistent halo models
• Particle Dark Matter - A Theorist's Perspective
• NNLL QCD Contribution of the Electromagnetic Dipole Operator to Gamma(anti-B -> X(s) gamma)
• Measurement of the CP Asymmetry in B -> X_s gamma
• CP asymmetry, branching ratios and isospin breaking effects of B -> K* gamma with the perturbative QCD approach
• Analytic two-loop virtual corrections to $b-->d{l}^{+}{l}^{-}$
• Rare radiative charm decays within the standard model and beyond
• SUSY breaking mediation mechanisms and (g-2)_μ, B -> X_s γ, B -> X_{s} l^+ l^- and B_s -> μ^+ μ^-
• New Higgs Effects in B--Physics in Supersymmetry with General Flavour Mixing
• Constraining the Unitarity Triangle with B -> V gamma
• Weakened Constraints from $b\to s\gamma$ on Supersymmetry Flavor Mixing Due to Next-To-Leading-Order Corrections
• Constraining top-quark couplings combining top-quark and $\mathbf{B}$ decay observables
• Analysis of enhanced tan(beta) corrections in MFV GUT scenarios
• Enhancement of W+/- H-/+ Production at Hadron Colliders in the Two Higgs Doublet Model
• Large Beyond-Leading-Order Effects in b -> s gamma in Supersymmetry with General Flavor Mixing
• B->X_s l^+l^- in the MSSM at NNLO
• Exploring top quark FCNC within 2HDM type III in association with flavor physics
• Completing the Calculation of BLM corrections to B -> Xs gamma
• A Solution for Little Hierarchy Problem and b --> s gamma
• Radiative B decay spectrum: DGE at NNLO
• Exploring the CP-Violating Inert-Doublet Model
• Comparative Study of CP Asymmetries in Supersymmetric Models
• Measurement of the Direct CP Asymmetry in b -> s gamma Decays
• Large-m_c Asymptotic Behaviour of O(alpha_s^2) Corrections to B -> X_s gamma
• Lepton number violating mSUGRA and neutrino masses
• Bounds on R-parity Violating Couplings at the Grand Unification Scale from Neutrino Masses
• B^0-\bar{B}^0 mixing and B \to X_s γdecay in the third type 2HDM: effects of NLO QCD contributions
• Shape-Function Effects and Split Matching in B-> Xs l+ l-
• All Possible Lightest Supersymmetric Particles in R-Parity Violating Minimal Supergravity Models
• Current and Future Limits on General Flavour Violation in b-->s Transitions in Minimal Supersymmetry
• Taming the B --> X(s) gamma spectrum by Dressed Gluon Exponentiation
• The $W\gamma$ decay of the elusive charged Higgs boson in the two-Higgs-doublet model with vectorlike fermions
• Precision Global Determination of the $B\to X_s\gamma$ Decay Rate
• NNLO QCD counterterm contributions to $B$ \to $X_s\gamma$ for the physical value of $m_c$
• CP Asymmetries of $B\to \varphi K$ and $B\to {\eta }^{(\prime )}K$ Decays Using a Global Fit in QCD Factorization
• Reduction of Charm Quark Mass Scheme Dependence in $\bar{B}\to X_s\gamma$ at the NNLL Level
• Light staus and enhanced Higgs diphoton rate with non-universal gaugino masses and SO(10) Yukawa unification
• B^0 -> phi K_S in SUGRA models with CP violations
• Effects of the scalar FCNC in $b\to s{l}^{+}{l}^{-}$ transitions and supersymmetry
• Review of Heavy Quark Physics - theory
• Update of the flavour-physics constraints in the NMSSM
• Status of SM calculations of b > s transitions
• Sneutrino as Lightest Supersymmetric Particle in B3 mSUGRA Models and Signals at the LHC
• Four-body contributions to B -> Xs gamma at NLO
• An Analysis of $B\to {\eta }^{\prime }K$ Decays Using a Global Fit in QCD Factorization
• Technicolor corrections on $B_{s,d}\to \gamma \gamma$ decays in QCD factorization
• $B\to X_s{l}^{+}{l}^{-}$ decay in a Top quark two-Higgs-doublet model
• CP asymmetry in $B\to \varphi K_S$ in a general two-Higgs-doublet model with fourth-generation quarks
• The decay $b\to s\gamma$ in the presence of a constant antisymmetric tensor field
• Flavor Changing Higgs Decays in Supersymmetry with Minimal Flavor Violation
• Dimension 7 operators in the b to s transition
• B -> Xsγconstraints on the top quark anomalous t-> cγcoupling
• Gigantic diphoton rate of heavy Higgs bosons in the aligned two Higgs doublet models with small $\tan \beta$
• Radiative B decays in Supersymmetry without R-parity
• Probing anomalous right-handed top quark couplings in rare B decays
• Rare decays $\bar{B}\to X_{s(d)}\gamma$ at the NLO
• Study on pure annihilation type B to V gamma decays
• Testing Higgs boson scenarios in the phenomenological NMSSM
• Neutrino-induced Electroweak Symmetry Breaking in Supersymmetric SO(10) Unification
• Some Novel Contributions to Radiative B Decay in Supersymmetry without R-parity
• B\to X_sγ, X_s l^+ l^- decays and constraints on the mass insertion parameters in the MSSM
• Revealing mass-degenerate states in Higgs boson signals
• QCD Corrections to the Radiative Decay B -> X_s gamma
• Next-to-leading Order Calculations of the Radiative and Semileptonic Rare B Decays in the Standard Model and Comparison with Data
• $BR(\bar{B}\to X_s\gamma )$: First Next-to-Next-to-Leading Order Results
• Exclusive Radiative Decays of B Mesons
• Heavy Meson Physics: What have we learned in Twenty Years?