Radiative corrections and Monte Carlo tools for low-energy hadronic cross sections in $e^+e^-$ collisions

KOL-F-101 (University of Zurich)


University of Zurich

Adrian Signer (PSI - Paul Scherrer Institut), Yannick Ulrich (University of Durham), Andrzej Kupsc, Graziano Venanzoni (University of Liverpool)

This hybrid conference acts as a satellite event to the 5th workstop/thinkstart and aims to collect some community input and form new collaboration.

  • Achim Denig
  • Adrian Signer
  • Alberto Lusiani
  • Alexander Nesterenko
  • Alka Kumari
  • Andrea Gurgone
  • Andrey Radzhabov
  • Andrzej Kupsc
  • Anna Driutti
  • Bai-Long Hoid
  • Bastian Kubis
  • Carlo Carloni Calame
  • Cesareo Dominguez
  • Clara Lavinia Del Pio
  • Daisuke Nomura
  • Daniel Gerardo Melo Porras
  • Daniel Moreno
  • Dominik Stoeckinger
  • Ettore Budassi
  • Evgeny Solodov
  • Fabian Lange
  • Fabio Anulli
  • Fedor Ignatov
  • Fulvio Piccinini
  • Gabriele Pierini
  • Gilberto Colangelo
  • Giovanni Abbiendi
  • Giovanni Stagnitto
  • Graziano Venanzoni
  • Guangshun Huang
  • Henryk Czyz
  • Jacobo Ruiz de Elvira Carrascal
  • Javad Komijani
  • Joao Pinto Barros
  • Joel Gogniat
  • Jose Luis Hernando Ariza
  • Kay Schönwald
  • Letizia Parato
  • Lois Flower
  • Lorenzo Cotrozzi
  • Lorenzo Cotrozzi
  • Marco Rocco
  • Marek Schoenherr
  • Marina Krstic Marinkovic
  • Martin Hoferichter
  • Martina Cottini
  • Massimo Passera
  • Matteo Fael
  • Noah Bray-Ali
  • Olga Shekhovtsova
  • Pablo Roig
  • Paolo Beltrame
  • Peter Stoffer
  • Ryan Moodie
  • Sophie Kollatzsch
  • Thomas Lenz
  • Thomas Teubner
  • Tim Engel
  • Varvara Batozskaya
  • Vladimir Pascalutsa
  • Weiping Wang
  • William J. Torres Bobadilla
  • Yannick Ulrich
  • Zbigniew Andrzej Was
    • Introduction and overview
      • 1
        Overview $g-2$
        Speaker: Martin Hoferichter (Unversity of Bern)
      • 2
        Workstop/thinkstart activities: towards a NNLO MC generator for low-energy $e^+e^-\to$ hadrons
        Speaker: Graziano Venanzoni (University of Liverpool)
    • 3:30 PM
      Coffee break
    • Experiments
    • Hadrons
    • 3:30 PM
      Coffee break
    • Hadrons
      • 8
        WP3: Processes with hadrons
        Speaker: Peter Stoffer (UZH and PSI)
    • Loops in QED
      • 9
        WP1: leptonic processes at NNLO & beyond
        Speaker: William Torres Bobadilla (Max-Planck-Institut für Physik)
      • 10
        WP2: Form factor contributions at N$^3$LO
        Speaker: Tim Engel (Uni Freiburg)
      • 11
        $e^+e^-\to\gamma\gamma^*$ at two loops in massless QED

        We present an analytic computation of $e^+e^-\to\gamma\gamma^*$ at two loops in massless QED. We reconstruct the analytic form of the amplitudes from numerical evaluations over finite fields. We express the integrals in a basis of Goncharov polylogarithms to obtain compact expressions. These contributions are required for N$^3$LO predictions of the inclusive process $e^+e^-\to\gamma^*$ and for NNLO corrections for ISR measurements of $e^+e^-\to\gamma\gamma^*$.

        Speaker: Ryan Moodie (Turin University)
    • Parton showers
      • 12
        WP4: parton shower
        Speaker: Carlo Carloni Calame (INFN, Pavia (IT))
      • 13
        Photon splitting corrections to soft-photon resummation

        In this talk I will motivate the importance of including QED corrections in a systematic and automated manner. I will present an algorithm to add photon-splitting corrections to the Yennie-Frautschi-Suura-style soft-photon resummation available in the Sherpa Monte-Carlo event generator. Then, I will introduce different lepton dressing strategies which incorporate further leptons and hadrons in addition to the customary photons, and discuss their sensitivity to dressing parameters such as the cone size. I will then present some results for academic and realistic setups.

        Speaker: Lois Flower (Durham University)
    • MUonE
    • 17
      Closing remarks and drinks