2002/10/30 by Svjetlana Fajfer, Anita Prapotnik, A. Prapotnik +1
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/s0370-2693(02)02964-7
published as Phys.Lett. B550 (2002) 77-84 · 10 pages, 2 figures
arxiv created 2002/10/30 · openalex publication_date 2002/12/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
The radiative decays D0 -> K0(bar) P0 gamma with nonresonant K0(bar) P0 (P0 = pi0, eta, eta') are considered within the framework which combines heavy quark effective theory and the chiral Lagrangian. Due to neutral mesons the amplitudes do not have bremsstrahlung contributions. We assume factorization for the weak matrix elements. Light (virtual) vector mesons are found to give the main contribution to the decay amplitudes. The decay D0 -> K0(bar) pi0 gamma is predicted to have a branching ratio of 3 x 10^(-4), with comparable contributions from parity-conserving and parity-violating parts of the amplitude. The decays with eta (eta') in the final state are expected with branching ratios of 1.1 x 10^(-5) and 0.4x10^(-7) respectively and are mainly parity conserving.