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Special Challenges in Quantum Chromodynamics

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Galileo Galilei Institute for Theoretical Physics

Galileo Galilei Institute for Theoretical Physics

Largo Enrico Fermi, 2, 50125 Florence, Italy
Description

(Photo by Yuri Dokshitzer)

 

This workshop focuses on advanced topics in perturbative Quantum Chromodynamics (QCD), inspired by  the scientific legacy of Stefano Catani

The central theme of this year's edition is Sudakov resummation. We plan to critically compare different resummation approaches, calculations in direct and conjugate spaces, in Soft Collinear Effective Theory (SCET) and direct QCD, parton showers and automated resummation techniques. Additionally, we will discuss the impact of resummation on heavy-quark fragmentation and shape variables in e+e- annihilation, and its relevance for the accurate determination of the strong coupling.

 

 

Speakers:  U. Aglietti, T. Becher, M. Cacciari, S. Kluth, F. Krauss, G. Ridolfi, G. Zanderighi

 

Organizers:  R. Bonciani, L. Cieri, D. de Florian, P. K. Dhani, G. Ferrera, M. Grazzini,  G. Rodrigo

 

Previous meetings:

Stefano Catani Memorial Symposium 2025

 

 

 

This event is sponsored by:

National Institute for Nuclear Physics (INFN)

 

The Galileo Galilei Institute for Theoretical Physics

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Participants
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  • Thursday 8 January
    • 13:30 → 14:00
      Welcome 30m
    • 14:00 → 14:15
      Introduction
    • 14:15 → 16:30
      Afternoon session
      • 14:15
        Resummation ambiguities in SCET vs. direct QCD 45m
        Speaker: Giovanni Ridolfi (Istituto Nazionale di Fisica Nucleare)
        ridolfi.pdf
      • 15:00
        Diagrammatic approaches, effective field theory, parton showers: Similarities and differences among resummation methods 45m
        Speaker: Thomas Becher (University of Bern)
        becher_GGI.pdf
      • 15:45
        Discussion 45m
    • 16:30 → 17:00
      Coffee Break 30m
    • 17:00 → 19:15
      Afternoon session
      • 17:00
        Resummation for heavy-quark fragmentation in e+e- collisions 45m
        Speaker: Matteo Cacciari (LPTHE Paris)
        ff.pdf
      • 17:45
        Parton Shower approach to Sudakov resummation 45m
        Speaker: Silvia Ferrario Ravasio (Istituto Nazionale di Fisica Nucleare)
        2026_01_07_Catani_SudakovResummation_in_PanScales.pdf
      • 18:30
        Discussion 45m
    • 20:30 → 22:30
      Social dinner 2h Antico Ristoro di' Cambi

      Antico Ristoro di' Cambi

      Via Sant'Onofrio, 1R, 50124 Firenze FI, Italy
  • Friday 9 January
    • 09:00 → 10:00
      Morning session
      • 09:00
        Experimental determination of alpha_S from semi-inclusive hard processes 1h
        Speaker: Stefan Kluth (Max Planck Institute)
        kluth.pdf
    • 10:00 → 10:30
      Coffee Break 30m
    • 10:30 → 10:35
      Group photo 5m
    • 10:35 → 12:50
      Morning session
      • 10:35
        Saddle-Point approximation in threshold resummation 45m
        Speaker: Ugo Giuseppe Aglietti (Istituto Nazionale di Fisica Nucleare)
        aglietti-scqcd.pdf
      • 11:20
        Automated resummation for event-shape variables 45m
        Speaker: Giulia Marcella Maria Zanderighi
        zanderighi.pdf
      • 12:05
        Discussion 45m
    • 12:50 → 13:00
      Closing
    • 13:00 → 14:30
      Lunch 1h 30m