The tetra-heavy baryonium spectra

TL;DR

This paper predicts the masses of various tetra-heavy baryonium states using QCD sum rules, providing theoretical guidance for experimental searches at LHC.

Contribution

It presents the first detailed QCD sum rule analysis of tetracharm and tetrabottom baryonium spectra including non-perturbative effects up to dimension 10.

Findings

Predicted four tetracharm baryonium states with specific masses and quantum numbers.

Estimated tetrabottom partners with higher masses.

Analyzed spectra of mixed-flavor baryonium states in the 13.4-14.4 GeV range.

Abstract

In this work, we investigate the spectra of the prospective tetracharm and tetrabottom baryonium, viz. the baryon-antibaryon states, in the framework of QCD sum rules. The non-perturbative contributions up to dimension 10 are taken into account. Numerical results indicate that there might exist 4 possible tetracharm baryonium states with masses $(7.33\pm0.12)$, $(7.42\pm0.13)$, $(7.68\pm0.17)$, and $(7.76\pm0.12)$ GeV for the quantum numbers of $0^{-+}$, $1^{--}$, $0^{++}$, and $1^{++}$, respectively. The corresponding tetrabottom partners are found lying respectively at $(19.41\pm 0.15)$, $(19.48\pm 0.15)$, $(19.77\pm 0.19)$ and $(19.84\pm 0.19)$ GeV. Additionally, we also analyze the spectra of the $\bar{\Xi}_{bc}\Xi_{bc}$ and $\bar{\Xi}_{cc}\Xi_{bb}$ baryonium states, which lie in the range of $13.77-14.40$ GeV and $13.39-14.14$ GeV, respectively. The possible baryonium decay modes are analyzed, which are hopefully measurable in LHC experiments.