Strong CP violation in spin-1/2 singly charmed baryons

TL;DR

This paper calculates the CP-violating electric dipole moments of spin-1/2 singly charmed baryons induced by the QCD θ-term using covariant baryon chiral perturbation theory up to next-to-leading order.

Contribution

It provides the first detailed calculation of CP violation effects in charmed baryons within chiral perturbation theory framework.

Findings

Calculated the CP-violating form factor F_3 for charmed baryons.

Estimated the electric dipole moments induced by the QCD θ-term.

Used covariant baryon chiral perturbation theory up to next-to-leading order.

Abstract

We report on the calculation of the CP-violating form factor $F_3$ and the corresponding electric dipole moment for charmed baryons in the spin-1/2 sector generated by the QCD $\theta$-term. We work in the framework of covariant baryon chiral perturbation theory within the extended-on-mass-shell renormalization scheme up to next-to-leading order in the chiral expansion.