Theoretical Elementary Particle Physics

The Standard Model (SM) of strong, electromagnetic and weak interactions has been successful in explain almost all the phenomenology of the high energy physics. However, it is not the ultimate theory because there are some issues that the SM does not provide an explanation. For instance, we can mention the discovery of neutrino oscillations and the fact that baryonic matter only contributes a few percent to the energy density of the Universe as two experimental evidences calling for physics beyond the SM. On the theoretical side, the apparent absence of CP violation in the QCD sector is also a strong motivation for going beyond the SM. Therefore, many theoretical ideas about the nature of the physics at the TeV scale have been proposed, examples include: supersymmetry, extra dimensions of space and new strong interactions. 

The research of the Theoretical Elementary Particle Physics and Cosmology group at UFMG spans the areas of:

• Model-building beyond the Standard Model.

• Dark matter.

• Neutrino physics. 

• Axion/Alps.

• Supersymmetry.

• Composite Higgs models.

Particle cosmology and gravitational waves from the early Universe

The recent detections of gravitational waves have opened a new avenue for probing physics beyond the Standard Model. Many SM extensions predict the existence of first order cosmological phase transitions, proceeding through bubble nucleation and percolation which could act as a source of a stochastic gravitational wave background. The detection of these waves could be used as complementary tests to colliders and particle detectors, and for this purpose a reasonably accurate prediction of the spectrum is needed from the theoretical side.

In this area, our research focuses on:

• Prediction of GW spectra in BSM models.

• Inverse mapping of GW spectra to model parameters.

• Hydrodynamics of the phase transition and prediction of the wall velocity from first principles.

• Use of machine learning techniques to calculate thermodynamic parameters of the phase transition.

Recent Papers

2024

• Gláuber C. Dorsch, Álvaro A. Louzi, Bruce L. Sánchez-Vega e Artur Viglioni. Vacuum Stability in the one-loop approximation of a 331 Model [arXiv:22402.00155 [physics.hep-ph]]

2023

• Thaisa C. da C. Guio e Gláuber C. Dorsch. Particle Physics in High School Part II: Nuclear Physics [arXiv:2303.10296 [physics.ed-ph]]

• G. Arcadi, Gláuber C. Dorsch, J. P. Neto, F. S. Queiroz e Y. M. Oviedo-Torres. Probing a Dark Sector with Collider Physics, Direct Detection, and Gravitational Waves [arXiv:2307.06376 [hep-ph]]

2022

• LISA Cosmology Working Group. Cosmology with the Laser Interferometer Space Antenna [arXiv:2204.05434]

• A. G. Dias, J. Leite, B. L. Sánchez-Vega. Scale-invariant 3-3-1-1 model with B−L symmetry. Phys. Rev. D 106, 115008.

• A. R. Aguirre, M.M. Chaichian, B.A.C. e Silva,  B. L. Sánchez-Vega. Spin-1/2 “bosons” with mass dimension 3/2 and fermions with mass dimension 1 cannot represent physical particle states. Eur. Phys. J. C 82, 958 (2022). 

• A. G. Dias, J. Leite, B. L. Sánchez-Vega. Scale-invariant 3-3-1-1 model with B−L symmetry. [arXiv:2007.06276].

• G. C. Dorsch, S. J. Huber, T. Konstandin. A sonic boom in bubble wall friction. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, v. 2022, p. 010, 2022.

2021

• B. L. Sánchez-Vega. Matéria escura axiônica. Cadernos de Astronomia, v. 2, p. 66-78, 2021.

• G. C. Dorsch. Um escuro quarto do Universo. Cadernos de Astronomia, v. 2, p. 34-57, 2021.

• G. C. Dorsch, T. C. C. Guio. Física de Partículas no ensino médio Parte I: Eletrodinâmica Quântica. REVISTA BRASILEIRA DE ENSINO DE FÍSICA (ONLINE), v. 43, p. e20210083, 2021

• G. C. Dorsch, S. J. Huber, T. Konstandin. On the wall velocity dependence of electroweak baryogenesis. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, v. 2021, p. 020, 2021. Citações:3

• G. C. Dorsch, L. E. A. Porto. An introduction to gravitational waves through electrodynamics: a quadrupole comparison. EUROPEAN JOURNAL OF PHYSICS, v. 43, p. 025602, 2021.

• A. R. Aguirre, R. J. Bueno Rogerio, B. A. Couto e Silva, B. L. Sánchez-Vega. Revisiting the spin-half bosons with mass dimension three-half. [arXiv:2112.14797].

2020

• Alex G. Dias, Julio Leite, B. L. Sánchez-Vega, William C. Vieira. Dynamical Symmetry Breaking and Fermion Mass Hierarchy in the Scale-Invariant 3-3-1 Model. [arXiv:2005.00556].

• Chiara Caprini, Mikael Chala; Glauber Dorsch, at al. Detecting gravitational waves from cosmological phase transitions with LISA: an update. JCAP v. 2020, p. 024-024, 2020. http://dx.doi.org/10.1088/1475-7516/2020/03/024

• C. H. Coronado Villalobos, R. J. Bueno Rogerio, A. R. Aguirre, and D. Beghetto. On the generalized spinor classification: beyond the Lounesto’s classification, EPJC 80 (2020) no.3, 228 [arXiv:1906.11622].

• A. R. Aguirre, and G. Flores-Hidalgo. A note on one-loop soliton quantum mass corrections. MPLA 33 (2020) 2050102 [arXiv:1912.13051].

2019

• Ana R. Romero Castellanos  C. E. Alvarez‐Salazar,  B. L. Sánchez‐Vega. Constraints on axionic dark matter in the 3‐3‐1 model. Astron. Nachr. 2019;340:131-134. https://doi.org/10.1002/asna.201913576  

• B. L. Sánchez-Vega, G. Gambini, and C. E. Alvarez-Salazar. Vacuum stability conditions of the economical 3−3−1 model from copositivity. EPJC 79, 299 (2019). https://doi.org/10.1140/epjc/s10052-019-6807-3 

• C. E. Alvarez‐Salazar  O. L. G. Peres  B. L. Sánchez‐Vega. The dark matter puzzle in a class of models with gauge symmetry SU(3)C ⊗ SU(3)L ⊗ U(1)N. Astron.Nachr. 2019, 1-4. https://doi.org/10.1002/asna.201913577 

• A. R. Aguirre, R. J. Bueno Rogerio, and C. H. Coronado Villalobos. A hint towards mass dimension one Flag-dipole spinors. EPJC 79 (2019) no.12, 991. [arXiv:1911.01742] 

• E. Abdalla, I. F. M. Albuquerque, A. Alves, L. Barosi, M. C. Q. Bazetto, R. C. Batista, C. A. Bernardes, C. Bonifazi, H. A. Borges, F. A. Brito, T. R. P. Carames, L. Casarini, D. Cogollo, A. G. Dias, A. Esmaili, M. M. Ferreira, G. Gil da Silveira, M. M. Guzzo, D. Hadjimichef, P. C. de Holanda, E. Kemp, A. Lessa, G. Lichtenstein, A. A. Machado, M. Makler, V. Marra, R. D. Matheus, P. G. Mercadante, T. B. de Melo3, C. C. Nishi, A. Nepomuceno, S. F. Novaes, V. L. Pimentel, P. R. D. Pinheiro, C. A. Pires, A. R. Queiroz, F. S. Queiroz, M. S. Rangel, D. C. Rodrigues, J. G. Rodrigues, V. de Souza, P. S. Rodrigues da Silva, C. Siqueira, E. Segreto, B. L. Sanchez-Vega, R. Rosenfeld, J. R. L. Santos, A.C.O. Santos, R. Silva, D. Sokolowska, P. R. Teles, T. R. F. P. Tomei, G. A. Valdiviesso, P. Vasconcelos, and A. Viana. Brazilian Community Report on Dark Matter 2019 (white paper).

2018

• C. C. Nishi, B. L. Sánchez-Vega, and G. Souza Silva. Mu-tau reflection symmetry with a high scale texture-zero. JHEP 2018, 42 (2018). https://doi.org/10.1007/JHEP09(2018)042 

• B. L. Sánchez-Vega, E. R. Schmitz, and J. C. Montero. New constraints on the 3-3-1 model with right-handed neutrinos. EPJC 78, 166 (2018). https://doi.org/10.1140/epjc/s10052-018-5626-2

• J. C. Montero, Ana R. Romero Castellanos, and B. L. Sánchez-Vega. Axion dark matter in a 3-3-1 model. PRD 97, 063015. https://doi.org/10.1103/PhysRevD.97.063015 

• G. C. Dorsch, S. J. Huber, and T. Konstandin. Bubble wall velocities in the Standard Model and beyond. JCAP, v. 2018, p. 034-034, 2018. http://dx.doi.org/10.1007/JHEP12(2017)086

• A. R. Aguirre, and G. Flores-Higaldo, A supersymmetric exotic field theory in (1+1) dimensions. One loop soliton quantum mass corrections. JHEP 12 (2018) 082 [arXiv:1610.01855].

• A. R. Aguirre, A. L. Retore, J. F. Gomes, N. I. Spano, and A. H. Zimerman, Defects in the supersymmetric mKdV hierarchy via Bäcklund transformations. JHEP 1801 (2018) 018 [arXiv:1709.05568].