Theory Seminar: Christopher Thomas

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Speaker: Christopher Thomas (University of Cambridge)

Title: Hadron scattering, resonances and exotics from lattice QCD
 

Abstract: I will discuss some recent progress in studying hadrons using first-principles lattice QCD calculations. The spectroscopy and interactions of hadrons probe the strongly-interacting regime of QCD, and in recent years experiments have observed a number of puzzling hadrons that challenge our understanding of the strong interaction. Lattice QCD provides a method for performing first-principles computations of the properties of hadrons and hence a QCD-base understanding of the phenomena. However, the majority of hadrons are unstable -- they decay strongly and appear as resonances in hadron-hadron scattering -- and lattice calculations of these are challenging. I will summarize recent advances in this area and present some applications in the heavy-meson sector, including calculations of Dπ, DK, and DK scattering relevant for the D^*₀(2300) and the enigmatic  D^*_s0(2317).