# Low-energy constants from charmed baryons on QCD lattices

## TL;DR

This paper determines low-energy constants for charmed baryons using lattice QCD data and chiral SU(3) theory, enabling more accurate modeling of their interactions.

## Contribution

It provides a comprehensive global fit of lattice data to extract N$^3$LO low-energy constants, confirming the large-Nc hierarchy and improving interaction models.

## Key findings

- Confirmed the hierarchy of low-energy constants in 1/Nc expansion.
- Determined all relevant low-energy constants at N$^3$LO from lattice data.
- Enhanced the understanding of Goldstone boson interactions with charmed baryons.

## Abstract

We study the light quark-mass dependence of charmed baryon masses as measured by various QCD lattice collaborations. A global fit to such data based on the chiral SU(3) Lagrangian is reported on. All low-energy constants that are relevant at next-to-next-to-next-to-leading order (N$^3$LO) are determined from the lattice data sets where constraints from sum rules as they follow from large-Nc QCD at subleading order are considered. The expected hierarchy for the low-energy constants in the 1/Nc expansion is confirmed by our global fits to the lattice data. With our results the low-energy interaction of the Goldstone bosons with the charmed baryon ground states is well constrained and the path towards realistic coupled-channel computations in this sector of QCD is prepared.