Spectra of heavy mesons in the Bethe-Salpeter approach
High Energy Physics - Phenomenology
2015-06-22 v2 High Energy Physics - Lattice
Nuclear Theory
Abstract
We present a calculation of the spectrum of charmonia, bottomonia and B_c-meson states with `ordinary' and exotic quantum numbers. We discuss the merits and limitations of a rainbow-ladder truncation of Dyson-Schwinger and Bethe-Salpeter equations and explore the effects of different shapes of the effective running coupling on ground and excited states in channels with quantum numbers J <= 3. We furthermore discuss the status of the X(3872) as a potential (excited) quark-antiquark state and give predictions for the masses of charmonia and bottomonia in the tensor channels with J=2,3.
Keywords
Cite
@article{arxiv.1409.5076,
title = {Spectra of heavy mesons in the Bethe-Salpeter approach},
author = {Christian S. Fischer and Stanislav Kubrak and Richard Williams},
journal= {arXiv preprint arXiv:1409.5076},
year = {2015}
}
Comments
9 pages, 8 figures, 1 table. Version to appear in Eur. Phys J. A