Conveners
Hadronic Interactions II
- Amy Nicholson (University of North Carolina at Chapel Hill)
Description
co-host: Dave Gaskell
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Astrid Hiller Blin (Jefferson Lab)4/16/21, 1:30 PMOral Presentation
The discovery of many unexpected new resonance candidates such as the XYZ states and pentaquarks has been challenging the quark model. While high-energy collisions of hadrons and nuclei are a good tool for investigating these topics, they are prone to kinematical effects from hadron decays into the final states. In turn, lepton colliders have been limited by statistics so far: a...
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Maxwell Hansen (University of Edinburgh)4/16/21, 1:50 PMOral Presentation
In this talk, I present a lattice-QCD calculation of the maximal-isospin, three-pion scattering amplitude (3π+ to 3π+). The calculation combines finite-volume energies with a relativistic field-theoretic formalism, required to interpret the results. I will describe the full work-flow required to reach the final amplitude, implemented here for the first time, and discuss the complicated...
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Andrew Jackura (Old Dominion University)4/16/21, 2:10 PMOral Presentation
Lattice QCD offers a systematic pathway to numerically compute the resonant hadronic spectrum from first principles. A set of integral equations connects the short-distance dynamics computed from lattice QCD to on-shell infinite-volume scattering amplitudes. In this talk, I will discuss our recent study on systematically improvable methods for the numerical solution of integral equations of a...
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Ruairí Brett (George Washington University)4/16/21, 2:30 PMOral Presentation
Much of the resonant spectrum of QCD consists of states which decay strongly into two- and three-body final states. Lattice QCD calculations have matured to the stage where these states can be reliably resolved in first principles numerical calculations. While connecting these finite-volume results to infinite-volume scattering is now commonplace in the two-body sector, three-body physics...
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Raul Briceno (Jefferson Lab)4/16/21, 2:50 PMOral Presentation
A rich variety of phenomena in the Standard Model and its extensions manifest in long-range processes involving hadrons. These are processes where intermediate hadronic states propagate over a long distance, between electroweak interactions (or new-physics), e.g. deeply virtual Compton scattering. Such processes are at the cusp of what can be systematically studied thanks to significant...
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