Theory of composite Higgs

• Grant number: 22/09255-0
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: September 01, 2022
• End date: February 28, 2023
• Field of knowledge: Physical Sciences and Mathematics - Physics - Elementary Particle Physics and Fields
• Principal Investigator: Gustavo Alberto Burdman
• Grantee: Henrique Ay Casa Grande
• Host Institution: Instituto de Física (IF). Universidade de São Paulo (USP). São Paulo , SP, Brazil
• Associated research grant: 19/04837-9 - Particle Physics Phenomenology, AP.TEM

Abstract

Since the discovery of the Higgs in 2012, the features of the SM are being completed. The solution of the hierarchy problem mentioned above has typically two approaches: if the Higgs boson is elementar, the supersymmetry must be present on the TeV scale. Otherwise, Higgs is a composite state. At these project we focus on in the last case.The composite Higgs model needs, in general, the existence of new particles on the scale of TeV. Since in these models Higgs is a pseudo Nambu-Goldstone Boson resulting of the spontaneous global symmetry breaking, those new states stem from a new symmetry and appear to be inevitable. The absence of detection of those states, mainly at LHC, is a problem from the models of composite Higgs. The goal of these project is to understand the phenomenology and the theoretical bases of these models.