Leptonic decays of D-wave vector quarkonia

Abstract

We give a short and basic introduction to our covariant Dyson-Schwinger-Bethe-Salpeter-equation approach using a rainbow-ladder truncated model of QCD, in which we investigate the leptonic decay properties of heavy quarkonium states in the pseudoscalar and vector channels. Comparing the magnitudes of decay constants, we identify radial 1-- excitations in our calculation with experimental excitations of J/Ψand Υ. Particular attention is paid to those states regarded as D-wave states in the quark model. We predict e+e- decay width of the Υ(1^3D_1) and Υ(2^3D_1) states of the order of ca. 15 eV or more. We also provide a set of predictions for decay constants of pseudoscalar radial excitations in heavy quarkonia.

5 pages, 4 figures, 1 table, revised after reviewer comments; to appear in the proceedings of the FAIRNESS2016 workshop

References in corpus (8)

• Big-Bang Nucleosynthesis
• Spectra of heavy quarkonia in a Bethe-Salpeter-equation approach
• Spectra of heavy mesons in the Bethe-Salpeter approach
• Mass spectra and Regge trajectories of light mesons in the Bethe-Salpeter approach
• Mind the gap
• Hadron Physics and the Dyson--Schwinger Equations of QCD
• Matrix algorithms for solving (in)homogeneous bound state equations
• Heavy pseudoscalar mesons in a Schwinger-Dyson--Bethe-Salpeter approach

Cited by in corpus (6)

• $Q\bar{Q}$ ($Q\in \{b,c\}$) spectroscopy using Cornell potential
• Heavy quarkonia in a contact interaction and an algebraic model: mass spectrum, decay constants, charge radii and elastic and transition form factors
• Aspects of open-flavour mesons in a comprehensive DSBSE study
• Comparison of two Minkowski-space approaches to heavy quarkonia
• Excited $B_c$ States via Continuum QCD
• S- and D-wave vector charmonia