Chiral perturbation theory for B→D and B→D semileptonic transition matrix elements at zero recoil

1992/12/30 by Lisa Randall, L. Randall, Mark B. Wise +1 · 3 citations
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph

paper · pdf · doi:10.1016/0370-2693(93)90057-o

published as Phys.Lett.B303:135-139,1993 · 10 pages, 1 figure (not included), CALT-68-1844, MIT-CTP-2177

arxiv created 1992/12/30 · openalex publication_date 1993/04/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

Heavy quark symmetry predicts the value of B → D and B → D^* transition matrix elements of the current c γ_μ(1 - γ₅)b, at zero recoil (where in the rest frame of the B the D or D^* is also at rest). We use chiral perturbation theory to compute the leading corrections to these predictions which are generated at low momentum, below the chiral symmetry breaking scale.

Cited by

• Lattice QCD calculation ofB¯→Dlν¯decay form factors at zero recoil
• Chiral corrections to the scalar form factor inBq→Dqtransitions
• Lattice QCD calculation of form factors describing the rare decaysB→K*ℓ+ℓ−andBs→ϕℓ+ℓ−