Oct 4 – 8, 2021
University of Alcalá
Europe/Madrid timezone

Nucleon sigma terms from lattice QCD

Oct 6, 2021, 12:10 PM
20m
Colegio San Ildefonso (University of Alcalá)

Colegio San Ildefonso

University of Alcalá

Speaker

Lukas Varnhorst (Aix-Marseille University)

Description

A lattice QCD determination of the nucleon sigma terms, which are closely related to the scalar charges of the nucleons, will be presented. These sigma terms determine the strength of the spin-independent interactions of nucleons with WIMPs searched for in direct dark matter detection experiments. They are also closely related to the masses of the nucleons. The calculation presented here is based on the Feynman-Hellmann theorem and features Wilson and staggered fermion formulations at different stages of the calculation to exploit their respective advantages.

Primary author

Lukas Varnhorst (Aix-Marseille University)

Presentation materials