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22.01.2024 / 13:15 - 14:15 / Zeuthen, 1.207 IRIS | HU Berlin
Lattice seminarSea-Quark Isospin-Breaking Effects (9/12)
Alessandro Cotellucci (Humboldt University of Berlin)
The quest for sub-percentage precision in hadronic observables requires the inclusion of isospin breaking effects (IBE) in Lattice QCD simulations. The sources of IBE are two: the up and down mass splitting and QED. These two effects have the same order or magnitude, and a consistent evaluation needs to consider both of them. From the practical point of view, there are two ways to include IBE in the simulations: the dynamical generation of QCD+QED configurations and the perturbative expansion of the IBE around isosymmetric QCD (the so-called RM123 method). The latter is widely established in literature but is usually performed in the electro quenched approximation, neglecting contributions from sea quarks. In this talk, I present an attempt to include sea-quark effects focussing on disconnected diagrams.
More Information: https://indico.desy.de/category/873/
