Jul 26 – 30, 2021
US/Eastern timezone

S parameter from a prototype composite-Higgs model

Jul 29, 2021, 2:30 PM
15m
Oral presentation Particle physics beyond the Standard Model Particle physics beyond the Standard Model

Speaker

Yigal Shamir (Tel Aviv University)

Description

We calculate the low-energy constant $L_{10}$ in an SU(4) lattice gauge theory
with dynamical fermions in two representations. This theory is close to a particular composite-Higgs model. From this, we obtain the contribution of the new strong sector to the S parameter. The resulting upper bound on the vacuum misalignment parameter $\xi$ is similar to current estimates for this bound. We outline future directions for lattice calculations in near-conformal composite-Higgs models.

Primary author

Yigal Shamir (Tel Aviv University)

Co-authors

Maarten Golterman (San Francisco State University) William Jay (Fermi National Accelerator Laboratory) Ethan Neil (University of Colorado Boulder) Benjamin Svetitsky (Tel Aviv University)

Presentation materials