Which EFT: SMEFT or HEFT

• Grant number: 21/08669-3
• Support Opportunities: Scholarships abroad - Research Internship - Master's degree
• Start date: October 20, 2021
• End date: December 19, 2021
• Field of knowledge: Physical Sciences and Mathematics - Physics - Elementary Particle Physics and Fields
• Principal Investigator: Oscar José Pinto Eboli
• Grantee: Matheus Martines de Azevedo da Silva
• Supervisor: Maria Concepcion Gonzalez-Garcia
• Host Institution: Instituto de Física (IF). Universidade de São Paulo (USP). São Paulo , SP, Brazil
• Institution abroad: Universitat de Barcelona (UB), Spain
• Associated to the scholarship: 20/02250-8 - On the nature of the Higgs boson, BP.MS

Abstract

In this project we will study whether the Standard Model (SM) gauge symmetry is linearly realized or not. In the linear scenario, the Higgs field belongs to a doublet of the symmetry group and the deviations of the SM predictions are described by an effective theory called Standard Model Effective Field Theory (SMEFT). In this case, the corrections for the triple interactions among the electroweak gauge bosons and the corrections for the interactions among the gauge bosons and the Higgs boson are correlated. On the other hand, when symmetry is non-linearly realized, the Higgs field is a singlet of the symmetry group and the proper effective theory is called Higgs Effective Field Theory. In this scenario, the correlations among the interactions mentioned above do not exist. Our goal is to study process corresponding to these interactions at the Large Hadron Collider to verify if the correlations in fact exist.

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

EBOLI, OSCAR J. P.; GONZALEZ-GARCIA, M. C.; MARTINES, MATHEUS. Electroweak Higgs effective field theory after LHC run 2. PHYSICAL REVIEW D, v. 105, n. 5, p. 16-pg., 2022-03-14. (18/16921-1, 21/08669-3)

CORBETT, TYLER; DESAI, JAY; EBOLI, O. J. P.; GONZALEZ-GARCIA, M. C.; MARTINES, MATHEUS; REIMITZ, PETER. Impact of dimension-eight SMEFT operators in the electroweak precision observables and triple gauge couplings analysis in universal SMEFT. PHYSICAL REVIEW D, v. 107, n. 11, p. 14-pg., 2023-06-09. (22/05332-0, 19/04837-9, 21/08669-3, 20/10004-7, 21/12305-7)