Please use this identifier to cite or link to this item: http://hdl.handle.net/10174/22053

Title: Application of the Covariant Spectator Theory to the Study of Heavy and Heavy-Light Mesons
Authors: Leitão, Sofia
Stadler, Alfred
Peña, Teresa
Biernat, Elmar P.
Keywords: Covariant spectator theory
Mesons
Issue Date: 2017
Publisher: Springer Vienna
Citation: Leitão, S., Stadler, A., Peña, M.T.,Biernat, E.P., Few-Body Syst (2017) 58: 91.
Abstract: As an application of the Covariant Spectator Theory (CST) we calculate the spectrum of heavy-light and heavy-heavy mesons using covariant versions of a linear confining potential, a one-gluon exchange, and a constant interaction. The CST equations possess the correct one-body limit and are therefore well-suited to describe mesons in which one quark is much heavier than the other. We find a good fit to the mass spectrum of heavy-light and heavy-heavy mesons with just three parameters (apart from the quark masses). Remarkably, the fit parameters are nearly unchanged when we fit to experimental pseudoscalar states only or to the whole spectrum. Because pseudoscalar states are insensitive to spin-orbit interactions and do not determine spin-spin interactions separately from central interactions, this result suggests that it is the covariance of the kernel that correctly predicts the spin-dependent quark-antiquark interactions.
URI: https://doi.org/10.1007/s00601-017-1251-0
https://link.springer.com/article/10.1007%2Fs00601-017-1251-0
http://hdl.handle.net/10174/22053
Type: article
Appears in Collections:FIS - Publicações - Artigos em Revistas Internacionais Com Arbitragem Científica

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