TRR110 Workshop - Amplitudes for Three-Body Final States



Campus of Max-Planck Society Ahornstr 85748 Garching Germany
Patricia Magalhães (TU Munich), Bastian Kubis (Universität Bonn), Christoph Hanhart (IAS, Forschungszentrum Juelich, Germany), Norbert Kaiser (TU Munich), Stephan Paul (TU Munich)

Decays of mesons and tau leptons into three hadrons serve as a tool in studying both
spectroscopy and the weak dynamics of heavy flavour decays. State of the art analyses of
experimental data are now able to determine the underlying decay amplitudes with less and less
model dependence, often projected onto the JPC of a 2-body subsystem. To explore the wealth
of new information and to extract the sought-for physics observables, however, requires a new
quality of mathematical description of such amplitudes. These are governed by the strong
interaction among these hadrons. While for almost 50 years such descriptions relied on the
idealized isobar picture (including S-wave scattering of two hadrons), high precision data
require a more refined understanding covering the full spectral distribution of these complex
amplitudes. Final state interaction, triangular diagrams, chiral dynamics, Regge phenomenology
and dispersion relations are just some of the ingredients used for this purpose.

The TRR110 workshop will joint theorists and experimentalists aiming to address above topics.


Register your self in the TRR110 Workshop
  • Aleksei Garmash
  • Alexander Austregesilo
  • Bachir Moussallam
  • Bastian Kubis
  • Bertram Kopf
  • Boris Grube
  • Bruno El-Bennich
  • Christoph Hanhart
  • Daniel Greenwald
  • Danny van Dyk
  • Dmitrii Riabchikov
  • Emilie Passemar
  • Fabian Krinner
  • Feng-Kun Guo
  • Florian Kaspar
  • Ikaros Bigi
  • Jacobo Ruiz de Elvira
  • Jan Friedrich
  • Jeremy Dalseno
  • Johann Kuehn
  • Jonas Rademacker
  • Keri Vos
  • Malte Albrecht
  • Malwin Niehus
  • Manoel Robilotta
  • Martin Beneke
  • Martin Faessler
  • Mathias Wagner
  • Melissa Maria Cruz Torres
  • Menglin Du
  • Miguel Albaladejo
  • Mikhail Mikhasenko
  • Norbert Kaiser
  • Patricia Magalhaes
  • Sebastian Uhl
  • Stefan Ropertz
  • Stefan Wallner
  • Stephan kuerten
  • Stephan Paul
  • Suh-Urk Chung
  • Thomas Latham
  • Tobias Isken
  • Veronika Chobanova
  • Wolfgang Duennweber
  • Wolfgang Ochs
    • 1:00 PM 1:20 PM
      Welcome & Opening: scope of the workshop
      • 1:00 PM
        Opening 20m
    • 1:20 PM 2:40 PM
      Amplitude analysis methods

      30 min +10 min discussion

      Convener: Fabian Krinner, Jonas Rademacker
    • 2:40 PM 3:10 PM
      coffee time + discussion 30m
    • 3:10 PM 5:10 PM
      Heavy meson pure hadronic decays

      30min +10min

      Convener: Jeremy Dalseno, Alexey Garmash, Keri Vos
    • 5:10 PM 7:00 PM
      discussion: What are the experimetal needs and issues?

      time for free discussion

    • 8:00 PM 10:00 PM
      World Cup semi-finals
    • 9:00 AM 10:20 AM
      Meson-meson scattering and Hadronic decay
      Convener: Jacobo Ruiz de Elvira, Manoel Robilotta
      • 9:00 AM
        Dispersive analysis for Kπ 40m
        Speaker: Jacobo Ruiz de Elvira
      • 9:40 AM
        KK scattering predictions from D+ → K-K+K+ decay amplitude 40m
        Speaker: Manoel Robilotta
    • 10:20 AM 10:50 AM
      coffee time 30m
    • 10:50 AM 12:10 PM
      Three-body technics on hadronic decays
      Convener: Elimie Passamar, M. Mikhasenko
    • 12:10 PM 2:00 PM
      lunch + discussion 1h 50m IPP Canteen

      IPP Canteen

    • 2:00 PM 3:20 PM
      Three-body technics on hadronic decays
      Convener: Tobias Isken, Bachir Moussallam
      • 2:00 PM
        Khuri--Treiman for η' decays and D+ → K-π+π+ 40m
        Speaker: Tobias Isken
      • 2:40 PM
        Isospin and chiral symmetries in D → K ππ amplitudes in the Khuri-Treiman formalism 40m
        Speaker: Bachir Moussallam
    • 3:20 PM 3:50 PM
      coffee time 30m
    • 3:50 PM 4:30 PM
      Three-body technics on hadronic decays
      Convener: Feng-Kun Guo
    • 4:30 PM 6:30 PM
      discussion: How to improve amplitude analyses?

      time for free discussion

    • 7:00 PM 8:30 PM
      Dinner 1h 30m 4th floor (Institute for Advanced Studies (IAS) - Faculty Club)

      4th floor

      Institute for Advanced Studies (IAS) - Faculty Club

      Inside TU campus Lichtenbergstraße 2 a 85748 Garching
    • 9:00 AM 10:20 AM
      Amplitude analysis methods
      Convener: Alexander Austregesilo, Bernard Kopf
    • 10:20 AM 10:50 AM
      coffee time 30m
    • 10:50 AM 11:30 AM
      Meson-meson scattering and Hadronic decay
      Convener: Stefan Ropertz
      • 10:50 AM
        Extensions of pion form factors beyond 1 GeV 40m
        Speaker: Stefan Ropertz
    • 11:30 AM 12:10 PM
      Heavy meson pure hadronic decays

      30min +10min

      Convener: Bruno El-Bennich
    • 12:10 PM 1:00 PM
      onsite lunch + discussion 50m
    • 1:00 PM 2:30 PM
      discussion: Interfacing data analysis and amplitude calculations

      time for free discussion

      Convener: Dr Boris Grube and Bastian Kubis
      • 1:00 PM
        Closing section 10m
    • 2:30 PM 2:40 PM
      Closing remarks