26-30 July 2021
Europe/Berlin timezone

Heavy states and electroweak effective approaches

28 Jul 2021, 10:00


Parallel session talk Top and Electroweak Physics T07-T09: Combined: Top, Electroweak and Higgs Physics


Ignasi Rosell


The existence of a mass gap between the Standard Model (SM) and possible new states encourages us to use effective field theories. Here we consider 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 short distances a resonance Lagrangian which couples the SM states to bosonic and fermionic resonances is assumed. After integrating out the resonances and assuming a well-behaved high-energy behavior, we estimate or constrain most of the bosonic low-energy constants in terms of only resonance masses. Current fits of these low-energy constants allow us to constrain the high-energy resonance masses.

Collaboration / Activity Theoretical Physics
First author Ignasi Rosell
Email rosell@uchceu.es

Primary author


Juan J. Sanz-Cillero (Universidad Complutense de Madrid) Antonio Pich Zardoya (Universidad de Valencia)

Presentation Materials