About
I will discuss recent progress and open challenges in computing multi-hadron electroweak amplitudes from lattice QCD, a Euclidean, finite-volume, discretised formulation of quantum chromodynamics. Starting from the underlying quarks and gluons, QCD predicts a spectrum of hadrons—such as the pion, kaon, and D meson—whose masses and matrix elements can now be computed with sub-percent precision using numerical lattice QCD. Looking beyond this, an important frontier involves scattering processes with multiple hadrons, including πK → πK, ππK, electroweak transitions such as πγ → ππ, K → ππ, D → ππ, and B → K*, and neutral-meson mixing amplitudes, as well as other long-distance matrix elements. Such observables are essential for interpreting experiments in flavour physics and testing the Standard Model. In this colloquium, I will aim to outline the key theoretical challenges in such calculations, review the methods developed to address them, and highlight a selection of recent results.
This talk is part also of the Charming Lattice QCD at CERN 2025 workshop
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The talk
Credits and licence
- Institution
- CERN
- Department
- Theory Colloquia
- Speaker
- Max Hansen
- Year
- 2025
- Language
- English
- Source
- CERN
- Licence
- CERN, as CERN states it. CERN's terms
- Attribution
- © CERN. CERN provides its audiovisual media free of charge for educational and informational use, credited to CERN; this lecture is shown in CERN's own player.
- Who can watch
- CERN gives no rating. Invisible Network shows it to Teens profiles and older, judged from what the source says about it. How courses are placed