ICHEP 2024

High-precision QCD physics at FCC-ee

18 Jul 2024, 16:45

15m

North Hall

Parallel session talk 06. Strong Interactions and Hadron Physics Strong interactions and Hadron Physics

Speaker

Stefan Kluth (Max Planck Society (DE))

Description

The CERN Future Circular Collider (FCC) is a post-LHC project aiming at direct and indirect searches for physics beyond the SM in a new 91 km tunnel. In addition, the FCC-ee offers unique possibilities for high-precision studies of the strong interaction in the clean e+e- environment, thanks to its broad span of c.m. energies from the Z pole to the top-pair threshold, and its huge integrated luminosities yielding ${10}^{12}$ and ${10}^8$ jets from Z and W decays, respectively, as well as ${10}^5$ pure gluon jets from Higgs decays. Selected studies of the impact of FCC-ee on improving our understanding of QCD will be summarized including: (i) ${\alpha }_s$ extractions with permil uncertainties, (ii) parton showers and jet properties (udsg discrimination, event shapes, multijet rates, jet substructure,...), (iii) heavy-quark jets (dead cone, charm-bottom separation, gluon-to-QQbar splitting,...); and (iv) nonperturbative QCD phenomena (color reconnection, baryon and strangeness production,..).

Presentation materials

ichep2024talk.pdf