Renormalon analysis of heavy-light exclusiveBdecays

2001/01/17 by Craig N. Burrell, Alexander R. Williamson · 1 citation
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph

paper · pdf · doi:10.1103/physrevd.64.034009

published as Phys.Rev. D64 (2001) 034009 · 12 pages, 2 figures

arxiv created 2001/01/17 · openalex publication_date 2001/07/03 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

We study two-body exclusive decays of the form B\ensuremath→D^(*)L (L=\ensuremathπ,\ensuremathρ,…) in the heavy-quark limit. We perform a renormalon analysis of such processes to determine the order at which nonperturbative factorization-breaking power corrections enter the amplitude. We find that a class of leading power corrections to the color octet matrix element, of O(\ensuremathΛ_QCD/m_b), vanishes in the limit of a symmetric light meson parton distribution function. We discuss the phenomenological significance of this result.

Citations

• Resummation of (ß0αs)n corrections in QCD: techniques and applications to the τ hadronic width and the heavy quark pole mass
• QCD Factorization forB→ππDecays: Strong Phases andCPViolation in the Heavy Quark Limit

Cited by

• Phenomenology ofB→ππ,πKdecays atO(αs2β0)in QCD factorization