String point of view for heavy-light mesons

Abstract

An approximate rotational symmetry of a heavy-light meson is viewed from a string picture. Using a simple string configuration, we derive a formula, $(M-m_c{)}^2=\pi \sigma L$, whose coefficient of the r.h.s. is just 1/2 of that of a light meson with two light quarks. A numerical plot is obtained for $D$ mesons of experimental data as well as several theoretical models, which shows good agreement with this formula.

4 pages, 5 figures, talk at XII Quark Confinement and the Hadron Spectrum

References in corpus (4)

• Properties of new unflavored mesons below 2.4 GeV
• Towards understanding broad degeneracy in non-strange mesons
• Generalizing the Noether theorem for Hopf-algebra spacetime symmetries
• Approximate degeneracy of heavy-light mesons with the same $L$