Please use this identifier to cite or link to this item: http://hdl.handle.net/10174/22012

Title: Covariant spectator theory of quark-antiquark bound states: Mass spectra and vertex functions of heavy and heavy-light mesons
Authors: Leitão, Sofia
Stadler, Alfred
Peña, M. T.
Biernat, Elmar P.
Keywords: Covariant spectator theory
Meson spectrum
Issue Date: 6-Oct-2017
Publisher: American Physical Society
Citation: Sofia Leitão, Alfred Stadler, M. T. Peña, and Elmar P. Biernat, Phys. Rev. D 96, 074007 (2017)
Abstract: We use the covariant spectator theory with an effective quark-antiquark interaction, containing Lorentz scalar, pseudoscalar, and vector contributions, to calculate the masses and vertex functions of, simultaneously, heavy and heavy-light mesons. We perform least-square fits of the model parameters, including the quark masses, to the meson spectrum and systematically study the sensitivity of the parameters with respect to different sets of fitted data. We investigate the influence of the vector confining interaction by using a continuous parameter controlling its weight. We find that vector contributions to the confining interaction between 0% and about 30% lead to essentially the same agreement with the data. Similarly, the light quark masses are not very tightly constrained. In all cases, the meson mass spectra calculated with our fitted models agree very well with the experimental data. We also calculate the mesons wave functions in a partial wave representation and show how they are related to the meson vertex functions in covariant form.
URI: https://doi.org/10.1103/PhysRevD.96.074007
https://journals.aps.org/prd/abstract/10.1103/PhysRevD.96.074007
http://hdl.handle.net/10174/22012
Type: article
Appears in Collections:FIS - Publicações - Artigos em Revistas Internacionais Com Arbitragem Científica

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