Searching for supersymmetry: the μνSSM. A short review

• Autores: Lopez, Daniel Elbio; Muñoz, Carlos
• Año de publicación: 2020
• Idioma: inglés
• Tipo de recurso: artículo
• Materia: PHYSICS BEYOND THE STANDAR MODEL; SUPERSYMMETRIC STANDARD MODEL
• Institución: Consejo Nacional de Investigaciones Científicas y Técnicas

We review the role played by the ‘μ from ν’ supersymmetric standard model (μνSSM) in the search for supersymmetry. First, we discuss its theoretical motivation, that is the simultaneous solution of μ- and ν-problems through the introduction of right-handed neutrinos. The latter produces R-parity violation (RPV), giving rise to interesting signals of new physics. As by-products, in the μνSSM there are dark matter candidates, and electroweak baryogenesis can be realized. Then, we survey signals by which the model could be tested at the large hadron collider (LHC). In addition to the enlarged Higgs sector with sneutrinos, we put special emphasis in analyzing the intimate connection between the lightest supersymmetric particle (LSP) lifetime and the size of neutrino Yukawa couplings. Displaced vertices and/or multileptons are some of the interesting signatures that can be probed. Finally, we discuss possible extensions of the μνSSM such as the inclusion in the superpotential of the conventional trilinear lepton-number violating couplings, the addition of an extra U(1)′ gauge group to the symmetry of the standard model, or the reinterpretation of the Higgs doublets as a fourth family of leptons superfields motivating the existence of a fourth family of vector-like quark doublet superfields.
Fil: Lopez, Daniel Elbio. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; Argentina
Fil: Muñoz, Carlos. Grupo de Aprendizaje Automatico ; Escuela Politecnica Superior ; Universidad Autonoma de Madrid;