2014/01/01 by Walaa I. Eshraim, Francesco Giacosa · 6 citations
Physics and Astronomy · #Charm (quantum number) #Charm quark #Meson #Particle physics theoretical and experimental studies #Pseudoscalar #Quantum Chromodynamics and Particle Interactions #Quantum and Classical Electrodynamics #Quark model #Scalar (mathematics) #Sigma #hep-ph
paper · pdf · doi:10.1051/epjconf/20148105009
published in EPJ Web of Conferences 81, 05009 (EDP Sciences) · 3 pages, 1 table, prepared for proceedings of the 13th International Workshop on Meson Production, Properties and Interaction, 29th May - 3rd June 2014, Cracow, POLAND
openalex publication_date 2014/01/01 · arxiv created 2014/11/09 · arxiv updated 2015/06/22 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We enlarge the so-called extended linear Sigma model (eLSM) by including the charm quark according to the global U(4)r × U(4)l chiral symmetry. In the eLSM, besides scalar and pseudoscalar mesons, also vector and axial-vector mesons are present. Almost all the parameters of the model were fixed in a previous study of mesons below 2 GeV. In the extension to the four-flavor case, only three additional parameters (all of them related to the bare mass of the charm quark) appear.We compute the (OZI dominant) strong decays of open charmed mesons. The results are compatible with the experimental data, although the theoretical uncertainties are still large.