Magnetic moment of the $X_1(2900)$ state in the diquark-antidiquark picture

TL;DR

This paper calculates the magnetic dipole moment of the $X_1(2900)$ tetraquark state using light-cone sum rules, providing insights into its internal structure and aiding future experimental studies.

Contribution

It presents the first theoretical estimate of the magnetic moment of the $X_1(2900)$ in the diquark-antidiquark model using light-cone sum rules.

Findings

Magnetic moment of $X_1(2900)$ is approximately 0.79 μ_N.

Results offer guidance for future experimental investigations.

Enhances understanding of open-flavor multiquark states.

Abstract

Motivated by the discovery of fully open-flavor tetraquark states $X_0(2900)$ and $X_1(2900)$ by the LHCb Collaboration, the magnetic dipole moment of the $X_1(2900)$ state with the quantum numbers $ J^{P} = 1^{-}$ is determined in the diquark-antidiquark picture using the light-cone sum rules. The numerical result is obtained as $ \mu_{X_1}=0.79^{+0.36}_{-0.39}\,\mu_N$. The magnetic moments of hadrons encompasses useful knowledge on the distributions of charge and magnetization their inside, which can be used to better understand their geometrical shapes and quark-gluon organizations. The observation of the $X_0(2900)$ and $X_1(2900)$ as the first two fully open-flavor multiquark states has opened a new window for investigation of the exotic states. The obtained results in the present study may shed light on the future experimental and theoretical searches on the properties of fully open-flavor multiquark states.