EFT for BSM via on-shell amplitudes

by Prof. Alex Pomarol (Barcelona, IFAE)

Wednesday 18 Jan 2023, 14:00 → 17:30 Asia/Seoul

1503 in building 1 (KIAS)

Title: EFT for BSM via on-shell amplitudes

Speaker: Alex Pomarol (Barcelona, IFAE)

Abstract: I will show how effective theories (EFT) can be described by on-shell amplitudes (instead of Lagrangians). I will also explain how amplitude methods allow to derive one-loop renormalization effects from just tree-level on-shell amplitudes, with no need of loop calculations. Finally, I will discuss how positivity bounds based on unitarity and crossing symmetry can constrain Wilson coefficients, having as an example the special case of large-N theories.

 

This is the second day of the two day lecture series. Please refer to https://indico.kias.re.kr/event/185 for information about the first day.