23 citations · 57 across the 9 of their papers we have counts for
15 papers
Reheating the FCC: Probing Early Matter Domination with Long-Lived Particles
Nicolás Bernal, Giovanna Cottin, Kuldeep Deka +1
We study a GeV-scale Higgs-portal scalar that can dominate the early Universe and later decay into Standard Model states, ending an early matter-dominated era. Ordinary cosmic…
Can LLP detectors probe the reheating temperature? A case study of vector dark matter
Paulo Areyuna C, Giovanna Cottin, Bastián Díaz Sáez +2
We study an extension of the singlet-scalar Higgs portal featuring a dark vector and a real scalar . The vector is a dark matter (DM) candidate, while is long-lived an…
Testing frozen-in pNGB dark matter with a long-lived dark Higgs
Nicolás Bernal, Giovanna Cottin, Bastián Díaz Sáez +1
We consider a simple Higgs portal dark matter (DM) model, where the Standard Model is extended with a complex singlet scalar. The imaginary part of the scalar becomes a massive and…
Probing light neutralinos from pair-produced sleptons with displaced vertices at the high-luminosity LHC
Giovanna Cottin, Juan Carlos Helo, Fabián Hernández-Pinto +2
We study light neutralinos () with masses ranging from 10 GeV to several hundred GeV within the framework of R-parity-violating (RPV) supersymmetry. These light neutr…
Heavy neutral leptons and top quarks in effective field theory
Rebeca Beltrán, Giovanna Cottin, Julian Günther +3
We study the phenomenology of heavy neutral leptons (HNLs) at the LHC in effective field theory, concentrating on operators with top quarks. Depending on the operator choice…
Long-lived particle phenomenology in one-loop neutrino mass models with dark matter
Carolina Arbeláez, Giovanna Cottin, Juan Carlos Helo +2
Neutrino masses and dark matter (DM) might have a common origin. The scotogenic model can be considered the proto-type model realizing this idea, but many other variants exist. In…