Speaker
Fabian Zierler
(Technical University of Munich)
Description
Diquarks are colour-nonsinglet objects that have gained interest in the study of baryons, tetraquarks and other exotics. A gauge invariant way of measuring diquark properties is obtained by contracting all colour indices with static colour sources. We extend this approach from baryons to tetraquarks with two static and two light quarks, which allows directly probing diquarks in higher colour representations on the lattice. We derive the structure of all Wick diagrams involved for an arbitrary number $N_f$ of light quarks and colours $N_c$ from tetraquark operators informed by the Born-Oppenheimer Effective Field Theory (BOEFT) and set the stage for first-principles calculation on the lattice.
Authors
Fabian Zierler
(Technical University of Munich)
Nora Brambilla
(Technical University of Munich)
Sipaz Sharma
(Technical University of Munich)