2015/04/23 by P. Camargo Magalhaes, Magalhães, P. C., M. R. Robilotta +1
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions
paper · pdf · doi:10.48550/arxiv.1504.06346
openalex publication_date 2015/04/23 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Studies of D and B mesons decays into hadrons have been used to test the\nstandard model in the last fifteen years. A heavy meson decay involves the\ncombined effects of a primary weak vertex and subsequent hadronic final state\ninteractions, which determine the shapes of Dalitz plots. The fact that final\nproducts involve light mesons indicates that the QCD vacuum is an active part\nof the problem. This makes the description of these processes rather involved\nand, in spite of its importance, phenomenological analyses tend to rely on\ncrude models. Our group produced, some time ago, a schematic calculation of the\ndecay D+ \→ K- \π+ \π+, which provided a reasonable description of\ndata. Its main assumption was the dominance of the weak vector-current, which\nyields a non-factorizable interaction. Here we refine that calculation by\nincluding the correct momentum dependence of the weak vertex and extending the\nenergy ranges of \π\π and K\π subamplitudes present into the problem.\nThese new features make the present treatment more realistic and bring theory\ncloser to data.\n