Magnetic moments of the doubly charged axial-vector $T_{cc}^{++}$ states

TL;DR

This paper calculates the magnetic moments of hypothetical doubly-charged $T_{cc}^{++}$ states using light-cone sum rules, providing predictions that can help identify their substructure and quantum numbers in future experiments.

Contribution

It introduces a calculation of the magnetic moments of $T_{cc}^{++}$ states considering a molecular picture and $J^P=1^+$, which has not been done before.

Findings

Magnetic moments are large due to double electric charge.

Results can be checked with other theoretical models.

Future measurements can help understand hadron substructure.

Abstract

Motivated by the discovery of the doubly-charmed state $T^+_{cc}$ and with the help of light-cone sum rules, the magnetic moments of possible $T_{cc}^{++}$ states are calculated. While calculating the magnetic moments of these states, these particles are considered in the molecular picture and they have $J^P = 1^+$ quantum numbers. The magnetic moment results obtained for the $T_{cc}^{++}$ states are large due to the double electric charge. The results obtained in this study can be checked using other theoretical models. The magnetic moments of the hadrons reveal valuable knowledge about the size and the shape of the hadrons. Measurement of the magnetic moment of the $T_{cc}^{++}$ states in future experimental collaborations can be very useful to understanding substructure and identification the quantum numbers of these states.