Multi-hadron transition rates from lattice QCD

by Maxwell T Hansen (CERN)

Thursday 15 Nov 2018, 14:00 → 15:00 Europe/Berlin

HS3 (Physikdepartment)

In the late 1960s, deep-inelastic scattering experiments, in which high energy leptons scatter off protons or other hadronic targets, proved crucial in solidifying our understanding of QCD as the quantum theory of the strong force. In such scattering events many hadrons are produced in the final state, but by considering inclusive rates (summed over the final states) one can define simpler observables that are described remarkably well by the underlying theory. However, as the energy is lowered into the regime of QCD resonances, the high-energy description breaks down and predictions become very challenging. The numerical technique of lattice QCD (LQCD), which has proven very successful in studying other low-energy quantities, should also play an important role in reaching a comprehensive, quantitative picture for such multi-hadron rates. But this aim is complicated by the fact that lattice calculations are defined in a finite volume and with imaginary time. In this talk I will present various methods for circumventing these issues to extract multi-hadron observables.