909 citations · 6k across the 134 of their papers we have counts for
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Brazilian Community Report on Dark Matter
E. Abdalla, I. F. M. Albuquerque, A. Alves +52
This white paper summarizes the activities of the Brazilian community concerning dark matter physics and highlights the importance of financial support to Brazilian groups that are…
Light Dark Matter: A Common Solution to the Lithium and Problems
Jailson Alcaniz, Nicolás Bernal, Antonio Masiero +1
Currently, the standard cosmological model faces some tensions and discrepancies between observations at early and late cosmological time. One of them concerns the well-known …
Explaining the AMS positron excess via Right-handed Neutrinos
Farinaldo S. Queiroz, Clarissa Siqueira
We have witnessed in the past decade the observation of a puzzling cosmic-ray excess at energies larger than GeV. The AMS-02 data published this year has new ingredients such…
Doubly Charged Scalar at the High-Luminosity and High-Energy LHC
Tessio B. de Melo, Farinaldo S. Queiroz, Yoxara Villamizar
Doubly charged scalars are common figures in several beyond the Standard Model studies, especially those related to neutrino masses. In this work, we estimate the High-Luminosity (…
New Physics Probes: Atomic Parity Violation, Polarized Electron Scattering and Neutrino-Nucleus Coherent Scattering
Giorgio Arcadi, Manfred Lindner, Jessica Martins +1
Atomic Parity Violation (APV) is usually quantified in terms of the weak nuclear charge of a nucleus, which depends on the coupling strength between the atomic electrons and…
Dark and Bright Signatures of Di-Higgs Production
Alexandre Alves, Tathagata Ghosh, Farinaldo S. Queiroz
If the Higgs boson decays to a pair of invisible particles, the number of di-Higgs events, where each Higgs decay into Standard Model (SM) particles, are reduced by a factor of two…
Type I + II Seesaw in a Two Higgs Doublet Model
D. Cogollo, Ricardo D. Matheus, Tessio B. de Melo +1
Two Higgs Doublet Models (2HDM) are popular extensions of the Standard Model for several reasons, but do not explain neutrino masses. In this work, we investigate how one can incor…
Has AMS-02 Observed Two-Component Dark Matter?
Stefano Profumo, Farinaldo Queiroz, Clarissa Siqueira
There is convincing observational evidence for an increasing cosmic-ray positron-to-electron ratio at energies larger than ~GeV, at odds with expectations from secondary p…
Lepton Flavor Violation and Collider Searches in a Type I + II Seesaw Model
Manoel M. Ferreira, Tessio B. de Melo, Sergey Kovalenko +2
Neutrino are massless in the Standard Model. The most popular mechanism to generate neutrino masses are the type I and type II seesaw, where right-handed neutrinos and a scalar tri…
A Two Higgs Doublet Model for Dark Matter and Neutrino Masses
Daniel A. Camargo, Miguel D. Campos, Téssio B. de Melo +1
Motivated by the interesting features of Two Higgs Doublet Models (2HDM) we present a 2HDM extension where the stability of dark matter, neutrino masses and the absence of flavor c…
Detecting Dark Matter with Neutron Star Spectroscopy
Daniel A. Camargo, Farinaldo S. Queiroz, Riccardo Sturani
The presence of dark matter has been ascertained through a wealth of astrophysical and cosmological phenomena and its nature is a central puzzle in modern science. Elementary parti…
Search for Semi-Annihilating Dark Matter with Fermi-LAT, H.E.S.S., Planck, and the Cherenkov Telescope Array
Farinaldo S. Queiroz, Clarissa Siqueira
Dark matter annihilations have been fiercely restricted by the non-observation of excess events in indirect detection probes. Typically the interactions that dictate annihilation a…