Two-loop QCD corrections to semileptonic b decays at an intermediate recoil

Abstract

We present complete O(alpha_s^2) corrections to the decay b-->c+l+nu at the point where the invariant mass of the leptons sqrt{q^2} equals the c quark mass. We use this result, together with previously obtained corrections at the ends of the q^2 spectrum, to estimate the total width of the semileptonic b-->c decay with O(alpha_s^2) accuracy, essential for the |V_{cb}| determination.

8 pages, revtex

References in corpus (7)

• Aspects Of Heavy Quark Theory
• High Power n of m_b in Beauty Widths and n=5 -> oo Limit
• Non-Abelian Dipole Radiation and the Heavy Quark Expansion
• Two-loop QCD Corrections to $b\to c$ Transitions at Zero Recoil: Analytical Results
• Two-loop QCD corrections to semileptonic b decays at maximal recoil
• Complete O(alpha_s^2) Corrections to Zero-Recoil Sum Rules for B-->D* Transitions
• Techniques for computing two-loop QCD corrections to b-->c transitions

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• Automatic Computation of Feynman Diagrams
• Fermionic NNLL corrections to b -> s γ
• O(α_s^2) corrections to semileptonic decay b \to c l \bar ν_l
• Second Order Corrections to the Muon Lifetime and the Semileptonic B Decay
• Inclusive Measure of |V_ub| with the Analytic Coupling Model
• Closed-Form Summation of RG-Accessible Logarithmic Contributions to Semileptonic B-Decays and Other Perturbative Processes
• Next-to-next-to-leading order calculations for heavy-to-light decays
• Revisiting Inclusive Decay Widths of Charmed Mesons
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• Heavy Quark Parameters and Vcb from Spectral Moments in Semileptonic B Decays
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• Determination of the CKM matrix elements |V(xb)|
• Progress on semi-leptonic $B_{(s)}$ decays
• Semi-Leptonic b-decay at Intermediate Recoil
• Three Loop Estimate of the Inclusive Semileptonic $b\to c$ Decay Rate
• Completing $1/m_b^3$ corrections to non-leptonic bottom-to-up-quark decays
• Vub extraction using the Analytic Coupling model