About
In this talk, we present a bootstrap construction of planar two-loop six-point scattering amplitudes in QCD theory, focusing on their maximal transcendental weight components. From an analysis of on-shell diagrams, we identify a complete and conformally-invariant set of leading singularities. Combining these results with recent advances in understanding the relevant hexagonal function space from canonical differential equation, we can uniquely determine the maximal weight parts of helicity amplitudes by imposing correct physical limits. We especially present a detailed picture of two-loop six-point amplitudes at the symbol level in pure Yang–Mills theory. It also reveals a remarkably small and tightly constrained function alphabet, hinting at a deeper organizing principle similar to that observed in maximally supersymmetric Yang–Mills theory. .
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The talk
Credits and licence
- Institution
- CERN
- Department
- QCD Seminars
- Speaker
- Qinglin Yang
- 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