Static-static-light baryonic potentials

TL;DR

This paper computes the potentials of doubly heavy baryons with a light quark using lattice QCD, providing data for modeling and comparing with theoretical models.

Contribution

It presents the first detailed lattice QCD calculations of doubly heavy baryonic potentials with light quarks, including excited states, for various quantum numbers.

Findings

Computed ground and excited state potentials for doubly heavy baryons

Compared lattice results with a factorization model

Used advanced all-to-all propagator techniques

Abstract

We determine doubly heavy baryonic potentials as a function of the distance between the two static sources, coupled to a light relativistic quark, for different quantum numbers. We use the variational method to compute the ground state and the first two excitations. These can be used as an input to nonrelativistic models or to NRQCD calculations of properties of doubly heavy baryons. We compare our findings with a factorization model. We employ all-to-all propagator methods, improved by an additional hopping parameter expansion and Wuppertal smearing on QCDSF configurations with two sea quark flavors.