July 28, 2020 to August 6, 2020
virtual conference
Europe/Prague timezone

Constraining resonances by using the EW effective theory

Jul 30, 2020, 12:42 PM
18m
virtual conference

virtual conference

Talk 01. Higgs Physics Higgs Physics

Speaker

Ignasi Rosell (Universidad CEU Cardenal Herrera (Valencia))

Description

Taking into account the mass gap between the Standard Model (SM) and possible new particles, the use of effective field theories is appropriate. We adopt here the non-linear realization of the electroweak symmetry breaking: the electroweak effective theory (EWET), also known as Higgs effective field theory (HEFT) or electroweak chiral Lagrangian (EWChL). At higher energies we assume a resonance Lagrangian which couples the SM states to bosonic and fermionic resonances. Integrating out the resonances and assuming a well-behaved short-distance behavior, we determine or constraint most of the bosonic low-energy constants in terms of resonance masses. The fit of these low-energy constants allows us to learn about the high-energy scales.

Secondary track (number) 03

Primary author

Ignasi Rosell (Universidad CEU Cardenal Herrera (Valencia))

Co-authors

Antonio Pich (IFIC, U. Valencia -.) Juan José Sanz-Cillero (Universidad Complutense de Madrid)

Presentation materials