Analysis of the triply-charmed pentaquark states with QCD sum rules

TL;DR

This paper uses QCD sum rules to analyze the properties of triply-charmed pentaquark states, explicitly separating parity contributions and predicting their masses for future experimental verification.

Contribution

It introduces a specific current construction and an energy scale formula to study triply-charmed pentaquarks with improved parity separation and mass predictions.

Findings

Predicted masses of triply-charmed pentaquarks.

Explicit separation of negative and positive parity states.

Application of an energy scale formula for spectral density analysis.

Abstract

In this article, we construct the scalar-diquark-scalar-diquark-antiquark type current to study the ground state triply charmed pentaquark states with the QCD sum rules. We separate the contributions of the negative-parity and positive parity triply charmed pentaquark states explicitly, and take the energy scale formula $\mu=\sqrt{M^2_{P}-(3{\mathbb{M}}_c)^2}$ to determine the optimal energy scales of the QCD spectral densities. The predicted pentaquark masses can be confronted to the experimental data in the future.