The two roads to ‘Intrinsic Charm’ in B decays

2009/11/17 by I. I. Bigi, Ikaros Bigi, Thomas Mannel +2 · 35 citations
Chemistry · Engineering · Physics and Astronomy · #Annihilation #Charm (quantum number) #Chemistry #Complement (music) #Nuclear physics #Particle Accelerators and Free-Electron Lasers #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Quantum mechanics #Valence (chemistry) #hep-ph

paper · pdf · doi:10.1007/jhep04(2010)073

published in Journal of High Energy Physics 2010(4) (Springer Nature) · 17 pages, 3 figures

arxiv created 2009/11/17 · openalex publication_date 2010/04/01 · arxiv updated 2014/11/20 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06

Abstract

We describe two complementary ways to show the presence of higher order effects in the 1/m_Q expansion for inclusive B decays that have been dubbed "Intrinsic Charm". Apart from the lessons they can teach us about QCD's nonperturbative dynamics their consideration is relevant for precise extractions of |V_cb|: for they complement the estimate of the potential impact of 1/m_Q⁴ contributions. We draw semiquantitative conclusions for the expected scale of Weak Annihilation in semileptonic B decays, both for its valence and non-valence components.

Citations

• Calculations in external fields in quantum chromodynamics. Technical review
• On the nonperturbative charm effects in inclusive B→Xcℓν decays

Cited by

• Inclusive semileptonic decays of the D_s meson: A first-principles lattice QCD calculation