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The Institute of Nuclear and Particle Physics Seminar series presents Raul Briceno of Old Dominion University discussing "Two- and three-particle scattering in QCD" on March 29 at 4 p.m. Seminars are held virtually on Teams or in Lindley S321.


Briceno is assistant professor of physics at Old Dominion University.


The host is Daniel Phillips.


Abstract: It is an exciting period in the field of nuclear physics. On one hand, it is well accepted that Quantum Chromodynamics (QCD) is the fundamental theory of the strong nuclear force. On the other hand, phenomenology and experiments have given us insight into the structure and properties of the universe’s basic building blocks. Despite this progress, there remains a large restriction on the physical phenomena that can be directly obtained from QCD due to the non-perturbative nature of the theory. Lattice QCD, being a non-perturbative framework, provides a promising pathway towards studying QCD eigenstates and their dynamics. Being defined in a finite-Euclidean spacetime, where the notion of scattering is absent within lattice QCD. Despite this obstacle, one can find exact relations between the finite-volume observables constrained via lattice QCD and desired scattering amplitudes in an infinite-Minkowski spacetime. In this talk, I introduce the foundational ideas that have allowed for the determination of a variety of scattering amplitudes. I will present several exploratory studies in the mesonic sector of QCD, including the first scattering amplitude of three-particle states obtained using these techniques.

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