Nonstrange baryonia

TL;DR

This paper develops relativistic six-quark equations to predict the masses of nonstrange baryonia, providing 15 new baryonium mass predictions based on amplitude pole analysis.

Contribution

It introduces a novel relativistic six-quark framework to calculate baryonia masses without mixing quarks and antiquarks, predicting 15 new baryonium states.

Findings

Predicted 15 baryonia masses.

Calculated relativistic six-quark amplitudes.

Used specific baryonium mass as a fit parameter.

Abstract

The relativistic six-quark equations including the $u$, $d$ quarks and antiquarks are found. The nonstrange baryonia $B \bar B$ are constructed without the mixing of the quarks and antiquarks. The relativistic six-quark amplitudes of the baryonia are calculated. The poles of these amplitudes determine the masses of baryonia. 15 masses of baryonia are predicted. The mass of baryonium with the spin-parity $J^P=0^-$ $M=1835\, MeV$ is used as a fit.