6 papers
Photons, jets and missing momentum from a two-vector dark sector
Yara do Amaral Coutinho, Benjamin Fuks, Mark D. Goodsell +5
We investigate the LHC phenomenology of a vector dark-sector effective theory containing two neutral massive vector states, both odd under a dark-parity symmetry. The lightest stat…
Search for Light Dark Sectors Using Electron-Photon Collisions
L. Angel, G. Casse, G. Gambini +6
The dark photon is a new gauge boson that naturally arises in many beyond the Standard Model theoretical models, featuring interactions that resemble quantum electrodynamics. Due t…
Search for a Doubly Charged Scalar at the LHC and FCC-hh
Leticia Guedes, Gabriela Hoff, Farinaldo S. Queiroz +2
Doubly charged scalars frequently emerge in many well-motivated extensions of the Standard Model, particularly in frameworks that aim to explain the origin of neutrino masses. Thei…
Can the FCC-hh prove the B-L gauge symmetry?
Farinaldo S. Queiroz, J. Zamora-Saa, Ricardo C. Silva +1
We present a phenomenological study of the discovery potential at the FCC-hh for a new heavy neutral vector boson, Z', predicted by the gauge symmetry. Focusing on the…
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…
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…