Electromagnetic properties of doubly charmed baryons in Lattice QCD

TL;DR

This study uses 2+1 flavor Lattice QCD to calculate electromagnetic properties of doubly charmed c baryons, revealing how heavy charm quarks influence their size, shape, and couplings.

Contribution

First Lattice QCD calculation of electromagnetic form factors and related properties of c baryons, providing insights into their internal structure and interactions.

Findings

Charm quarks reduce charge radii and magnetic moments compared to protons.

Electromagnetic form factors enable extraction of magnetic moments and radii.

Results enhance understanding of doubly charmed baryon structure.

Abstract

We compute the electromagnetic properties of \Xi_cc baryons in 2+1 flavor Lattice QCD. By measuring the electric charge and magnetic form factors of \Xi_cc baryons, we extract the magnetic moments, charge and magnetic radii as well as the \Xi_cc \Xi_cc \rho coupling constant, which provide important information to understand the size, shape and couplings of the doubly charmed baryons. We find that the two heavy charm quarks drive the charge radii and the magnetic moment of \Xi_cc to smaller values as compared to those of, e.g., the proton.