28–31 Oct 2024
Heavy Ion Laboratory, University of Warsaw
Europe/Warsaw timezone

Origin of mass scales in scale-symmetric extension of Standard Model

30 Oct 2024, 14:15
20m
„Aula B” Lecture Room (Heavy Ion Laboratory, University of Warsaw)

„Aula B” Lecture Room

Heavy Ion Laboratory, University of Warsaw

Pasteura 5A, 02-093 Warsaw, Poland

Speaker

Paulina Michalak (University of Warsaw)

Description

The hierarchy problem arises from quantum corrections at ultraviolet scales, which drive the Higgs boson mass to values higher than observed experimentally. One potential solution is to impose conformal or scale symmetry. However, the Higgs mass must still be generated, which can occur through spontaneous breaking of scale symmetry. In this work, we propose a scale-symmetric extension of the Standard Model Higgs sector, where mass scales emerge not through radiative corrections but through the spontaneous breaking of scale symmetry, triggered when the Goldstone boson (dilaton) acquires a vacuum expectation value (VEV). We demonstrate how this VEV is reached through the evolution of fields in the hot early Universe, and show that coupling this theory to gravity provides a stable solution.

Authors

Paulina Michalak (University of Warsaw) Prof. Zygmunt Lalak (University of Warsaw)

Presentation materials