On Monday, April 15, 2024, at 12:00 c.t., the next date of our Physics Colloquium will take place.
Speaker is Prof. Dr. John Bulava (Ruhr-University Bochum) on the topic "Hyperon Scattering Amplitudes from Lattice QCD".
The properties of baryons depend sensitively on their quark contents. Scattering amplitudes involving hyperons, which contain strange quarks in addition to up and down quarks, are essential phenomenological inputs in hadron and nuclear physics. However, many hyperon scattering processes are difficult to determine experimentally. First principles Monte Carlo simulations of QCD, the quantum field theory underlying quark and gluon interactions, can compute these otherwise inaccessible processes and explore the effects of varying quark masses. To this end, recent lattice QCD simulation results are presented on the structure of the longcontroversial Lambda(1405) baryon. A small perturbation of the quark masses from their physical values reveals two nearby excitations, in agreement with chiral effective theory. Prospects for future computations of hyperon scattering amplitudes are also discussed.
Abstract of the lecture by Prof. Bulava
The introduction will be given by PD. Dr. Mikhail Mikhasenko.
The faculty cordially invites all interested parties. The event will take place in the lecture hall HNB. We offer coffee and cookies before the colloquium.
All dates of the Physics Colloquium can be found here.