Power suppressed effects in B¯→Xsγ at O(αs)

2009/11/30 by T. Ewerth, Thorsten Ewerth, Paolo Gambino +1
Chemistry · Mathematics · Physics and Astronomy · #Black Holes and Theoretical Physics #Chemistry #Dimension (graph theory) #Geometry #Mathematical physics #Mathematics #Operator (biology) #Operator product expansion #Particle physics theoretical and experimental studies #Photon #Physics #Power (physics) #Product (mathematics) #Pure mathematics #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #Radiative transfer #Spectrum (functional analysis) #Theoretical physics #hep-ph

paper · pdf · doi:10.1016/j.nuclphysb.2009.12.035

published as Nucl.Phys.B830:278-290,2010 · 14 pages,4 figures, v2: comments and one figure on endpoint behaviour added, version to appear on NPB

arxiv created 2010/01/05 · openalex publication_date 2010/01/07 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

We compute the O(alpha_s) corrections to the Wilson coefficients of the dimension five operators emerging from the Operator Product Expansion of inclusive radiative B decays. We discuss the impact of the resulting O(alpha_s Lambda_QCD²/m_b²) corrections on the extraction of m_b and mu_pi² from the moments of the photon spectrum.

Citations

• QCD Calculations of Radiative B Decays
• Analysis of the photon spectrum in inclusiveB→Xsγdecays
• Averages of b-hadron and c-hadron Properties at the End of 2007
• Integration by parts: The algorithm to calculate β-functions in 4 loops
• Inclusive semileptonicBand polarizedΛbdecays from QCD
• B, D and K decays