SMuK 2023 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

HK: Fachverband Physik der Hadronen und Kerne

HK 76: Invited Talks IV

HK 76.2: Hauptvortrag

Freitag, 24. März 2023, 11:30–12:00, HSZ/0002

Hadron structure in Lattice QCD — •Konstantin Ottnad — PRISMA+ Cluster of Excellence and Institut für Kernphysik, Johannes Gutenberg-Universität Mainz, Germany

Quantum chromodynamics (QCD) at low energies gives rise to a plethora of states as quark and gluons become bound in hadrons. Among these hadronic states are nucleons which account for the bulk part of visible matter in the universe. Due to their dynamical origin they are not pointlike particles but exhibit a rich and complex internal structure which is studied extensively in both experiment and theoretical studies.

Concerning the theoretical side, lattice QCD provides the obvious framework for ab initio hadron structure calculations as it is the only known method to deal with QCD in the non-perturbative regime from first principles. In recent years it has finally become feasible to obtain precise physical results with fully controlled systematics from such lattice calculations of hadron structure observables. Still, this remains a very challenging and computationally expensive endeavour as these calculations are always affected by a notorious signal-to-noise problem that hinders the extraction of groundstate matrix elements.

In this talk I will outline some of the essential methods used to carry out state-of-the-art hadron structure calculations within lattice QCD and discuss recent results from the Mainz group for nucleon matrix elements at zero and nonvanishing momentum transfer.