Long-distance behavior of the quark-antiquark static potential. Application to light-quark mesons and heavy quarkonia

TL;DR

This paper investigates how sea quark pairs influence the static potential between quarks, proposing a universal screened potential model that explains meson spectra across light and heavy quarks, leading to new state assignments.

Contribution

It introduces a universal screened static potential derived from light-quark meson spectra and applies it successfully to heavy quarkonia, offering new insights into meson state assignments.

Findings

Proposes a universal form for the screened static potential.

Suggests X(4260) as the 4s charmonium state.

Predicts a 5s bottomonium resonance around 10748 MeV.

Abstract

Screening effects from sea pairs on the quark-antiquark static potential are analyzed phenomenologically from the light-quark to the heavy-quark meson spectra. From the high excited light-quark meson spectrum a universal form for the screened static potential is proposed. This potential is then succesfully applied to heavy quarkonia. Our results suggest the assignment of X(4260) to the 4s state of charmonium and the possible existence of a 5s bottomonium resonance around 10748 MeV.