The charge conjugation quantum number in multiquark systems

TL;DR

This paper explores the charge conjugation quantum number in multiquark systems, specifically tetraquarks and meson-meson molecules, to better understand the nature of the XYZ charmonium-like resonances.

Contribution

It provides a detailed analysis of charge conjugation properties in multiquark configurations, offering insights into their quantum numbers and potential interpretations.

Findings

Charge conjugation quantum number is crucial for classifying multiquark states.

Tetraquarks and meson-meson molecules exhibit distinct charge conjugation characteristics.

Results aid in identifying the nature of XYZ resonances.

Abstract

We discuss the charge conjugation quantum number for tetraquarks or meson-meson molecules, seen as possible interpretations of the newly found $XYZ$ charmonium-like resonances.