Electric dipole moments of baryons with bottom quarks

TL;DR

This paper calculates the CP-odd electric dipole moments of bottom baryons using effective field theory, providing insights into potential beyond-Standard Model CP violation effects accessible through upcoming experiments.

Contribution

It introduces a method to compute EDMs of bottom baryons considering dimension-six operators within the Standard Model Effective Field Theory, linking theoretical predictions to experimental prospects.

Findings

Estimated EDM sizes for bottom baryons under BSM scenarios

Application of heavy-baryon chiral perturbation theory to EDM calculations

Discussion of EDM magnitudes relevant for TeV-scale new physics

Abstract

Triggered by experimental prospects to measure electromagnetic dipole moments of baryons containing a bottom quark, we calculate the CP-odd electric dipole moments (EDMs) of spin-1/2 single-bottom baryons. We consider CP-violating dimension-six operators in the Standard Model Effective Field Theory that involve bottom quarks, and apply heavy-baryon chiral perturbation theory to compute the EDMs of several baryons. We discuss the expected size of the EDMs for beyond-the-Standard Model physics appearing at the TeV scale.