2007/11/30 by Fulvia De Fazio, F. De Fazio, Thorsten Feldmann +3
Mathematics · Physics and Astronomy · #Amplitude #Coupling (piping) #Coupling constant #Distribution (mathematics) #Effective field theory #Form factor (electronics) #Hadron #High-Energy Particle Collisions Research #Mathematical analysis #Mathematics #Meson #Nuclear physics #Order (exchange) #Parametric statistics #Particle physics #Particle physics theoretical and experimental studies #Physics #Pseudoscalar #Pseudoscalar meson #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Quantum mechanics #Recoil #Sum rule in quantum mechanics #Vector meson #hep-ph
paper · pdf · doi:10.1088/1126-6708/2008/02/031
published as JHEP 0802:031,2008 · 27 pages, 19 figures, minor corrections, matches journal version
openalex publication_date 2008/02/12 · arxiv created 2008/02/21 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/06
We investigate sum rules for heavy-to-light transition form factors at large recoil derived from correlation functions with interpolating currents for light pseudoscalar or vector fields in soft-collinear effective theory (SCET). We consider both, factorizable and non-factorizable contributions at leading power in the Lambda/mb expansion and to first order in the strong coupling constant alphas, neglecting contributions from 3-particle distribution amplitudes in the B-meson. We pay particular attention to various sources of parametric and systematic uncertainties. We also discuss certain form factor ratios where part of the hadronic uncertainties related to the B-meson distribution amplitude and to logarithmically enhanced alphas corrections cancel.