Hierarchical quiver Gauge theories: model building and phenomenology

• Grant number: 12/21436-9
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• Start date: May 01, 2013
• End date: May 02, 2017
• Field of knowledge: Physical Sciences and Mathematics - Physics - Elementary Particle Physics and Fields
• Principal Investigator: Ricardo D'Elia Matheus
• Grantee: Leonardo de Lima
• Host Institution: Instituto de Física Teórica (IFT). Universidade Estadual Paulista (UNESP). Campus de São Paulo. São Paulo , SP, Brazil
• Associated scholarship(s): 15/25393-0 - Composite Higgs models and cosmological relaxation of the electroweak scale, BE.EP.PD

Abstract

The Standard Model (SM) of particle physics is an extremely successful description of all experimental data obtained thus far. However, there are reasons to expect that the SM cannot be valid for arbitrarily high energy scales. In the SM, the mass of the Higgs boson is quadratically sensitive to radiative corrections and, hence, suffers from a huge fine-tunning problem, leading to the so-called gauge hierarchy problem whose natural solution demands the presence of new physics at the TeV scale.In this project we investigate four dimensional models that describe physics at the TeV scale obtained from discretized five dimensional theories with an AdS5 metric, following the procedure of dimensional deconstruction. In these theories the gauge and fermion mass hierarchies are naturally generated. We propose to build realistic models of electroweak symmetry breaking and to study their phenomenology. We may also study the holographic description of strongly coupled systems. We will make predictions to be verified at the LHC and other experiments. (AU)

Scientific publications

(8)

(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)

DE LIMA, L.; MACHADO, C. S.; MATHEUS, R. D.; DO PRADO, L. A. F.. Higgs flavor violation as a signal to discriminate models. Journal of High Energy Physics, n. 11, NOV 12 2015. (13/01907-0, 12/21436-9, 13/03862-3, 12/21627-9)

CHALA, MIKAEL; DURIEUX, GAUTHIER; GROJEAN, CHRISTOPHE; DE LIMA, LEONARDO; MATSEDONSKYI, OLEKSII. Minimally extended SILH. Journal of High Energy Physics, n. 6, JUN 16 2017. (12/21436-9, 15/25393-0)

FONSECA, N.; DE LIMA, L.; MACHADO, C. S.; MATHEUS, R. D.. Large field excursions from a few site relaxion model. Physical Review D, v. 94, n. 1, JUL 7 2016. (13/01907-0, 12/21436-9, 15/15361-4, 12/21627-9)

FONSECA, N.; DE LIMA, L.; MACHADO, C. S.; MATHEUS, R. D.. Large field excursions from a few site relaxion model. Physical Review D, v. 94, n. 1, p. 7-pg., 2016-07-07. (12/21627-9, 15/15361-4, 12/21436-9, 13/01907-0)

CHALA, MIKAEL; DURIEUX, GAUTHIER; GROJEAN, CHRISTOPHE; DE LIMA, LEONARDO; MATSEDONSKYI, OLEKSII. Minimally extended SILH. Journal of High Energy Physics, v. N/A, n. 6, p. 32-pg., 2017-06-16. (12/21436-9, 15/25393-0)

FONSECA, NAYARA; VON HARLING, BENEDICT; DE LIMA, LEONARDO; MACHADO, CAMILA S.. A warped relaxion. Journal of High Energy Physics, v. N/A, n. 7, p. 38-pg., 2018-07-05. (12/21436-9, 15/25393-0)

FONSECA, NAYARA; VON HARLING, BENEDICT; DE LIMA, LEONARDO; MACHADO, CAMILA S.. A warped relaxion. Journal of High Energy Physics, n. 7, JUL 5 2018. (12/21436-9, 15/25393-0)

DE LIMA, L.; MACHADO, C. S.; MATHEUS, R. D.; DO PRADO, L. A. F.. Higgs flavor violation as a signal to discriminate models. Journal of High Energy Physics, v. N/A, n. 11, p. 23-pg., 2015-11-12. (12/21627-9, 13/03862-3, 12/21436-9, 13/01907-0)