X(3872) and Its Heavy Quark Spin Symmetry Partners in QCD Sum Rules

TL;DR

This paper uses QCD Sum Rules to analyze the X(3872) meson and predicts its heavy quark spin symmetry partners, including bottom sector mesons, providing mass and quantum number estimates consistent with existing data.

Contribution

It introduces a QCD Sum Rules approach with a molecular current to predict heavy quark spin symmetry partners of X(3872).

Findings

Predicted four heavy partners to X(3872) and bottomonium.

Masses and quantum numbers of partners are consistent with experimental data.

Results align with previous theoretical studies.

Abstract

X(3872) presents many surprises after its discovery more than ten years ago. Understanding its properties is crucial to understand the spectrum of possible exotic mesons. In this work, X(3872) meson and its heavy quark spin symmetry (HQSS) partners (including the mesons in the bottom sector) are studied within the QCD Sum Rules approach using a current motivated by the molecular picture of X(3872). We predict four heavy partners to X(3872) and bottomonium with the masses and J^PC quantum numbers. Obtained results are in good agreement with the previous studies and available experimental data within errors.