8 papers
Brazilian Report on Dark Matter 2024
I. F. M. Albuquerque, J. Alcaniz, A. Alves +51
One of the key scientific objectives for the next decade is to uncover the nature of dark matter (DM). We should continue prioritizing targets such as weakly-interacting massive pa…
Search for sub-GeV Scalars in collisions
D. Cogollo, Y. M. Oviedo-Torres, Farinaldo S. Queiroz +2
Light scalars that couple to leptons are common figures in beyond the Standard Model endeavors. Considering a scalar that has universal and couplings to leptons only, we compute th…
Vector-Like Fermions and Inert Scalar Solutions to the Muon g-2 Anomaly and collider probes at the HL-LHC and FCC-hh
Á. S. de Jesus, F. S. Queiroz, J. W. F. Valle +1
We examine simple models with an inert scalar and vector-like leptons that can explain the recent measurement reported at FNAL. Prompted by this exciting result, we explore…
Updated Big Bang Nucleosynthesis Bounds on Long-lived Particles from Dark Sectors
J. R. Alves, L. Angel, L. Guedes +5
As electromagnetic showers may alter the abundance of Helium, Lithium, and Deuterium, we can place severe constraints on the lifetime and amount of electromagnetic energy injected…
Confronting the inverse seesaw mechanism with the recent muon g-2 result
João Paulo Pinheiro, C. A. de S. Pires, Farinaldo S. Queiroz +1
Since the heavy neutrinos of the inverse seesaw mechanism mix largely with the standard ones, the charged currents formed with them and the muons have the potential of generating r…
Rare Kaon Decay to Missing Energy: Implications of the NA62 Result for a Model
Téssio B. de Melo, Sergey Kovalenko, Farinaldo S. Queiroz +2
Meson decays offer a good opportunity to probe new physics. The rare kaon decay is one of the cleanest of them and, for this reason, is rather sensitiv…