Charmed mesons with a symmetry-preserving contact interaction

Fernando E. Serna, Bruno El-Bennich, and Gastão Krein
Phys. Rev. D 96, 014013 – Published 19 July 2017

Abstract

A symmetry-preserving treatment of a vector-vector contact interaction is used to study charmed heavy-light mesons. The contact interaction is a representation of nonperturbative kernels used in Dyson-Schwinger and Bethe-Salpeter equations of QCD. The Dyson-Schwinger equation is solved for the u, d, s and c quark propagators and the bound-state Bethe-Salpeter amplitudes respecting spacetime-translation invariance and the Ward-Green-Takahashi identities associated with global symmetries of QCD are obtained to calculate masses and electroweak decay constants of the pseudoscalar π, K, D and Ds and vector ρ, K*, D*, and Ds* mesons. The predictions of the model are in good agreement with available experimental and lattice QCD data.

  • Received 5 April 2017

DOI:https://doi.org/10.1103/PhysRevD.96.014013

© 2017 American Physical Society

Physics Subject Headings (PhySH)

Nuclear PhysicsParticles & Fields

Authors & Affiliations

Fernando E. Serna1, Bruno El-Bennich2, and Gastão Krein1

  • 1Instituto de Física Teórica, Universidade Estadual Paulista, Rua Dr. Bento Teobaldo Ferraz, 271-Bloco II, 01140-070 São Paulo, São Paulo, Brazil
  • 2Laboratorio de Física Teórica e Computacional, Universidade Cruzeiro do Sul, Rua Galváo Bueno 868, 01506-000 São Paulo São Paulo, Brazil

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Issue

Vol. 96, Iss. 1 — 1 July 2017

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