2002/05/31 by W. Y. Wang, Yue-Liang Wu, Y. L. Wu +2
Physics and Astronomy · #B meson #Effective field theory #Field theory (psychology) #High-Energy Particle Collisions Research #Lepton #Meson #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Quark #Semileptonic decay #hep-ph
paper · pdf · doi:10.1103/physrevd.67.014024
published as Phys.Rev.D67:014024,2003 · 18 pages, ReVtex, 5 figures, added references and comparison of results, and corrected signs in some formulae
arxiv created 2002/08/28 · openalex publication_date 2003/01/30 · arxiv updated 2014/11/17 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We present a general study of exclusive semileptonic decays of heavy (B,D,Bs) to light (\ensuremathπ,\ensuremathρ,K,K*) mesons in the framework of the effective field theory of heavy quarks. The transition matrix elements of these decays can be systematically characterized by a set of wave functions which are independent of the heavy quark mass except for the implicit scale dependence. Form factors for all these decays are calculated consistently within the effective theory framework using the light cone sum rule method at the leading order of the 1/mQ expansion. The branching ratios of these decays are evaluated, and the heavy and light flavor symmetry breaking effects are investigated. We also give a comparison of our results and the predictions from other approaches, among which are the relations proposed recently in the framework of large energy effective theory.