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

7–9 Jun 2023
University of Zurich
Europe/Zurich timezone

Session

Loops in QED

8 Jun 2023, 16:30
KOL-F-101 (University of Zurich)

KOL-F-101

University of Zurich

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  1. 5. WP1: leptonic processes at NNLO & beyond
    William Torres Bobadilla (Max-Planck-Institut für Physik)
    08/06/2023, 16:30
  2. 6. WP2: Form factor contributions at N$^3$LO
    Tim Engel (Uni Freiburg)
    08/06/2023, 16:45
  3. 15. $e^+e^-\to\gamma\gamma^*$ at two loops in massless QED
    Ryan Moodie (Turin University)
    08/06/2023, 17:10

    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...

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