F. Queiroz

A possible interpretation of the LUX-ZEPLIN recoil event in the 2HD+a scenario

Giorgio Arcadi, Mattia di Mauro, Abdelhak Djouadi +1

It is tantalizing to consider the recent observation of the LUX-ZEPLIN (LZ) experiment of a high energy nuclear recoil candidate at $E_{Recoil} ≃ 248$ keV as the long-awai…

Photons, jets and missing momentum from a two-vector dark sector

Yara do Amaral Coutinho, Benjamin Fuks, Mark D. Goodsell +4

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…

Dark Matter as a Source for Lepton Flavor Violation

Jeremy Echeverria, Patricio Escalona, Farinaldo Queiroz +1

We will witness enormous progress in the experimental sensitivity to charged-lepton-violation processes in the near future. New physics signals of charged lepton violation might be…

Multi-Component Dark Matter as a Solution to the Galactic Center GeV Excess

Farinaldo S. Queiroz, Clarissa Siqueira, Carlos E. Yaguna

The Galactic Center Excess (GCE) is a compelling signature of dark matter annihilation, but its spectral morphology is difficult to reconcile with the traditional paradigm of a sin…

Cosmological Constraints on Long-Lived Particles Using Dimension-Six Effective Operators

Mickael V. S. de Farias, Rodrigo Holanda, Matheus M. A. Paixao +2

Long-lived particles (LLPs) provide an interesting window into physics beyond the Standard Model, offering characteristic signatures at colliders and in cosmology. In this work, we…

Search for Axions and Dark Photons Using Single Molecule Magnets

Jose R. Alves, Manfred Lindner, Farinaldo S. Queiroz +1

Molecular magnets, although analogous to familiar macroscopic magnets, offer a platform for next generation magnetic storage technologies with far higher data densities and prospec…

Type I + II Seesaw Model in light of the New Neutrino Oscillation Measurements

Maria Aguilar, Juan Carlos Helo, Toshihiko Ota +3

Global analysis of neutrino oscillation data slightly favors normal mass ordering. In this work, we investigate an extended scalar sector that naturally gives rise to a type I + II…

Constraining Effective Field Theories for dark matter candidates annihilating into gamma-ray lines with CTAO

Lucia Angel, Debasish Borah, Jacinto P. Neto +2

Gamma-ray lines constitute a smoking gun signature for annihilating dark matter particles. Imaging Atmospheric Cherenkov Telescopes and satellites have searched for such signals bu…

Updated Bounds on the Minimal Left-Right Symmetric Model from LHC Dilepton Resonance Searches

Gabriela Lichtenstein, Ricardo C. Silva, Mario J. Neves +1

The Left-Right model is a popular extension of the Standard Model that features three new neutral gauge bosons, $W_{R}^{\pm}$ and $Z_{R}$ . Collider searches for a Left-Right symmetry a…

Enabling Thermal Dark Matter within the Vanilla $L_{μ}$ - $L_{τ}$ Model

Nicolás Bernal, Jacinto P. Neto, Javier Silva-Malpartida +1

Thermal dark matter is a compelling setup that has been probed by a multitude of experiments, mostly in the GeV-TeV mass range. The thermal paradigm in the sub-GeV range is about t…

Reinterpretation and preservation of data and analyses in HEP

Jon Butterworth, Sabine Kraml, Harrison Prosper +145

Data from particle physics experiments are unique and are often the result of a very large investment of resources. Given the potential scientific impact of these data, which goes…

Type-II Seesaw Mechanism for Dirac Neutrinos and its Implications on $N_{eff}$ and Lepton Flavor Violation in a 3-3-1 model

Vinícius Oliveira, Patricio Escalona, Lucia Angel +2

In this study, we implement the type-II seesaw mechanism for Dirac neutrino masses within the framework of a 3-3-1 model. To this end, we introduce a scalar sextet and impose both…

Updated BBN Bounds on Hadronic Injection in the Early Universe: The Gravitino Problem

Lucia Angel, Giorgio Arcadi, Matheus M. A. Paixão +1

Late-decaying particles naturally arise in many extensions of the Standard Model, directly impacting key cosmological processes in the early universe, such as Big Bang Nucleosynthe…

hep-ph2024★ 1 cited

The Hubble Tension: Relativistic Dark Matter Production from Long-lived Particles

Alvaro S. de Jesus, Matheus M. A. Paixão, Dêivid R. da Silva +2

The tension between direct measurements of the Hubble constant and those stemming from Cosmic Microwave Background probes has triggered a multitude of studies. The connection betwe…

hep-ph2024★ 2 cited

Ultraheavy Dark Matter and WIMPs Production aided by Primordial Black Holes

Giorgio Arcadi, Manfred Lindner, Jacinto P. Neto +1

The unitary bound restricts thermal relics to be lighter than $100$ TeV. This work investigates the production of ultraheavy dark matter and WIMPs in the presence of primordial bla…

hep-ph2024★ 57 cited

The Waning of the WIMP: Endgame?

Giorgio Arcadi, David Cabo-Almeida, Maíra Dutra +7

Weakly Interacting Massive Particles (WIMPs) continue to be considered some of the best-motivated Dark Matter (DM) candidates. No conclusive signal, despite an extensive search pro…

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 $g_{μ} - 2$ measurement reported at FNAL. Prompted by this exciting result, we explore…

hep-ph2023★ 1 cited

Constraining Gamma-ray Lines from Dark Matter Annihilation using Fermi-LAT and H.E.S.S. data

Lucia Angel, Guillermo Gambini, Leticia Guedes +2

Using 14 years of Fermi-LAT data and 10 years of H.E.S.S. observations in the direction of the galactic center, we derive limits on gamma-ray lines originated from dark matter anni…

hep-ph2023★ 5 cited

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…

Constraints on Hidden Sectors Using Rare Kaon Decays

D. Cogollo, M. J. Neves, Tessio B. de Melo +3

The charged Kaon meson ( $K^{+}$ ) features several hadronic decay modes, but the most relevant contribution to its decay width stems from the leptonic decay $K^{+} \to μ^{+} ν_{μ}$ .…

Searching for a Leptophilic Z' and a 3-3-1 symmetry at CLIC

A. Alves, G. Gil da Silveira, V. P. Gonçalves +3

We derive the discovery potential of a leptophilic Z', and a Z' rising from a $S U (3) \times S U (3)_{L} \times U (1)_{N}$ symmetry at the Compact Linear Collider (CLIC), which is planned…

hep-ph2023★ 13 cited

Probing a Dark Sector with Collider Physics, Direct Detection, and Gravitational Waves

Giorgio Arcadi, Glauber C. Dorsch, Jacinto P. Neto +2

We assess the complementarity between colliders, direct detection searches, and gravitational wave interferometry in probing a scenario of dark matter in the early universe. The mo…

Toward a search for axion-like particles at the LNLS

L. Angel, P. Arias, C. O. Dib +8

Axion-Like Particles (ALPs) appear in several dark sector studies. They have gained increasing attention from the theoretical and experimental community. In this work, we propose t…