Investigating the M1 radiative decay behaviors and the magnetic moments of the predicted triple-charm molecular-type pentaquarks

Abstract

In this work, we systematically study the electromagnetic properties including the M1 radiative decay widths and the magnetic moments of the isoscalar ${\Xi }_{cc}{D}^{(\ast )}$, ${\Xi }_{cc}{D}_1$, and ${\Xi }_{cc}{D}_2^{\ast }$ triple-charm molecular-type pentaquark candidates, where we adopt the constituent quark model and consider both the $S$-$D$ wave mixing effect and the coupled channel effect. Our numerical results suggest that the M1 radiative decay widths and the magnetic moments of the isoscalar ${\Xi }_{cc}{D}^{(\ast )}$, ${\Xi }_{cc}{D}_1$, and ${\Xi }_{cc}{D}_2^{\ast }$ triple-charm molecular-type pentaquark candidates can reflect their inner structures, and the study of the electromagnetic properties is the important step to construct the family of the triple-charm molecular-type pentaquarks. With the accumulation of the experimental data during the high-luminosity phase of LHC, we expect that the present work combined with the corresponding mass spectrum information can encourage the experimental colleagues at LHCb to focus on the isoscalar ${\Xi }_{cc}{D}^{(\ast )}$, ${\Xi }_{cc}{D}_1$, and ${\Xi }_{cc}{D}_2^{\ast }$ triple-charm molecular-type pentaquark candidates.

Comments: 10 pages, 2 figure, and 4 tables