Wednesday 26 March 2025
Scientists have been studying a type of subatomic particle called a tetraquark, which is made up of four quarks held together by strong nuclear forces. In recent years, several new tetraquark particles have been discovered, but their properties and behaviors are still not well understood.
One type of tetraquark that has garnered significant attention is the c¯cs¯s system, which consists of a charm quark (c), an anticharm quark (¯c), a strange quark (s), and an antistrange quark (¯s). Researchers have been trying to understand the properties of this system, including whether it can form bound states or resonant states.
To study the c¯cs¯s system, scientists used a theoretical framework called the chiral quark model. This model is based on the idea that quarks are held together by strong nuclear forces, which are mediated by particles called gluons. The model also takes into account the interactions between quarks and gluons.
The researchers used this model to study the c¯cs¯s system with different quantum numbers, including JP C = 0++, 1++, 1+−, and 2++. They found that in each of these systems, there are several channels or ways that the quarks can interact. These channels include meson-meson structures, where two quark-antiquark pairs are held together by strong nuclear forces, as well as diquark-antidiquark structures, where a quark-quark pair and an antiquark-antiquark pair are held together.
The researchers used the chiral quark model to calculate the energies of these channels and found that they all exceed the corresponding theoretical thresholds. This means that no bound states or resonant states were found in any of the c¯cs¯s systems studied.
However, the researchers did find some interesting results when they applied a technique called the real scaling method. This method involves scaling the distance between the quarks and calculating the energies of the system as a function of this distance. The researchers found that at certain distances, the energy of the system approaches a threshold, which is the energy required for the quarks to break apart.
The results of this study are significant because they provide new insights into the properties of tetraquark systems and the strong nuclear forces that hold them together. They also highlight the importance of studying these systems using theoretical models and experimental data.
Cite this article: “Properties of Tetraquarks: Insights from Theoretical Models”, The Science Archive, 2025.
Tetraquark, Quarks, Strong Nuclear Forces, Chiral Quark Model, Meson-Meson Structures, Diquark-Antidiquark Structures, Bound States, Resonant States, Real Scaling Method, Quantum Numbers.
