Precise predictions for B -> Xs l+ l- in the large q^2 region

Abstract

The inclusive B -> Xs l+ l- decay rate in the large q^2 region (q^2 > m_{ψ'}^2) receives significant nonperturbative corrections. The resulting uncertainties can be drastically reduced by normalizing the rate to the B -> Xu l nu rate with the same q^2 cut, which allows for much improved tests of short distance physics. We calculate this ratio, including the order 1/m_b^3 nonperturbative corrections and the analytically known NNLO perturbative corrections. Since in the large q^2 region an inclusive measurement may be feasible via a sum over exclusive states, our results could be useful for measurements at LHCb and possibly for studies of B -> Xd l+ l-.

arXiv comment7 pages, 4 figures, v2: corrected Eq. (6), journal version

References in corpus (58)

• QCD Predictions for Lepton Spectra in Inclusive Heavy Flavour Decays
• Weak Radiative B-Meson Decay Beyond Leading Logarithms
• Effective Hamiltonian for $B \ra X_s e^+ e^-$ Beyond Leading Logarithms in the NDR and HV Schemes
• Inclusive Semileptonic B and Polarized Lambda_b Decays from QCD
• Nonperturbative Corrections to Inclusive Beauty and Charm Decays: QCD versus Phenomenological Models
• Photonic penguins at two loops and m_t-dependence of BR[ B -> X_s l^+ l^-]
• The Physics of Hadronic Tau Decays
• Effective Hamiltonian for Non-Leptonic |Delta F| = 1 Decays at NNLO in QCD
• Nonperturbative Contributions to the Inclusive Rare Decays $B\to X_s\gamma$ and $B\to X_s{\ell }^{+}{\ell }^{-}$
• Electromagnetic Logarithms in B -> X_s l+ l-
• Sum Rules for Heavy Flavor Transitions in the SV Limit
• Anomalous Dimension Matrix for Radiative and Rare Semileptonic B Decays up to Three Loops
• B decay and the Upsilon mass
• Exclusive rare B -> K*e+e- decays at low recoil: controlling the long-distance effects
• Measurements of branching fractions, rate asymmetries, and angular distributions in the rare decays B --> Kl+l- and B --> K*l+l-
• Global analysis of inclusive B decays
• B decays in the upsilon expansion
• Measurement of the B -> Xs l+ l- branching fraction with a sum over exclusive modes
• Improved Measurement of the Electroweak Penguin Process B->Xsll
• Complete NNLO QCD Analysis of B -> X_s l^+ l^- and Higher Order Electroweak Effects
• Calculation of two-loop virtual corrections to b --> s l+ l- in the standard model
• Exact ${\alpha }_s$ Calculation of $b\to s+\gamma$, \ $b\to s+g$
• Corrections of Order ${\Lambda }_{QCD}^2/m_c^2$ to Inclusive Rare B Decays
• Two-loop virtual corrections to B --> X_s l^+ l^- in the standard model
• The rare decay B --> X_s l^+ l^- to NNLL precision for arbitrary dilepton invariant mass
• Order 1/m_b^3 corrections to B\to X_c\ell\barνdecay and their implication for the measurement of \barΛand λ_1
• Implications of the $B\to X\ell {\bar{\nu }}_{\ell }$ lepton spectrum for heavy quark physics
• $O(m_c^{-2})$ nonperturbative corrections to the inclusive rate of the decay $B\to X_s\gamma$
• Power Corrections in the Decay Rate and Distributions in $B\to X_s{\ell }^{+}{\ell }^{-}$ in the Standard Model
• Two-loop matching of the dipole operators for $b\to s\gamma$ and $b\to sgluon$
• Elementary derivation of a recently proposed integral representation for permanents
• Higher Order $1/m$ Corrections at Zero Recoil
• Comment on nonperturbative effects in $B\to X_s\gamma$
• Weak Annihilation and the Endpoint Spectrum in Semileptonic B Decays
• Measurement of Forward-Backward Asymmetry and Wilson Coefficients in $B\to K^{\ast }{\ell }^{+}{\ell }^{-}$
• $|V_{ub}|$ from exclusive $B$ and $D$ decays
• Forward--Backward Asymmetry in B -> X_s l^+ l^- at the NNLL Level
• Nonperturbative Effects in $\bar{B}\to X_s{l}^{+}{l}^{-}$ for Large Dilepton Invariant Mass
• NNLL corrections to the angular distribution and to the forward-backward asymmetries in b -> X_s l+ l-
• B decay shape variables and the precision determination of |Vcb| and mb
• Determination of the Branching Fraction for B --> Xc l nu Decays and of |Vcb| from Hadronic-Mass and Lepton-Energy Moments
• Non-factorization effects in heavy mesons and determination of |V_{ub}| from inclusive semileptonic B decays
• Complete gluon bremsstrahlung corrections to the process b -> s l+ l-
• A Model Independent Determination of |V_{ub}|
• Enhanced subleading structure functions in semileptonic B decay
• Comment on $V_{ub}$ from Exclusive Semileptonic B and D Decays
• Extracting short distance information from b -> s l+ l- effectively
• Nonperturbative corrections to moments of the decay B -> X_s l^+ l^-
• Semileptonic b --> u decays: lepton invariant mass spectrum
• On the Inclusive Determination of V_{ub} from the Lepton Invariant Mass Spectrum
• Calculation of 1/m^3 terms in the total semileptonic width of D mesons.
• Complete bremsstrahlung corrections to the forward-backward asymmetries in $b\to X_s{\ell }^{+}{\ell }^{-}$
• Shape-Function Effects and Split Matching in B-> Xs l+ l-
• Universality and m_X cut effects in B -> Xs l+ l-
• Nonperturbative corrections to B -> X_s l^+ l^- with phase space restrictions
• Status of SM calculations of b > s transitions
• Resumming Phase Space Logarithms in Inclusive Semileptonic $B$ Decays
• Subleading corrections to the V_ub determination from exclusive B decays

Cited by in corpus (23)

• Flavor Physics in the Quark Sector
• Rare $B$ Decays as Tests of the Standard Model
• Constraints on New Physics in MFV models: a model-independent analysis of Delta F=1 processes
• Towards the Identification of New Physics through Quark Flavour Violating Processes
• Model-independent constraints on new physics in b --> s transitions
• B, D and K decays
• Logarithmically Enhanced Corrections to the Decay Rate and Forward Backward Asymmetry in anti-B --> X(s) l+ l-
• On the LHCb anomaly in B -> K* l+ l-
• Analytic calculation of two-loop QCD corrections to b\to s\ell^+\ell^- in the high q^2 region
• New Physics in b -> s mu+ mu-: CP-Conserving Observables
• Radiative and Electroweak Penguin Decays of B Mesons
• New Physics at a Super Flavor Factory
• The Minimal Flavour Violation benchmark in view of the latest LHCb data
• On the Universality of CP Violation in Delta F = 1 Processes
• Phenomenology of inclusive $\bar{B}\to X_s{\ell }^{+}{\ell }^{-}$ for the Belle II era
• Constraining weak annihilation using semileptonic D decays
• Long distance effects in inclusive rare $B$ decays and phenomenology of $\bar{B}\to X_d{\ell }^{+}{\ell }^{-}$
• Nonperturbative m_X cut effects in B -> Xs l+ l- observables
• $B\to X_{{}_S}{l}^{+}{l}^{-}$ in the minimal gauged $(B-L)$ supersymmetry
• Analysis of Various Polarization Asymmetries In The Inclusive $b\to s{\ell }^{+}{\ell }^{-}$ Decay In The Fourth-Generation Standard Model
• Recent developments in radiative B decays
• Theoretical Interest in B-Meson Physics at the B factories, Tevatron and the LHC
• On magnitudes of some CKM matrix elements