The fact that neutrinos have mass and the existence dark matter in our Universe are two of the most compelling pieces of evidence that our understanding of particle physics is not yet complete. My research focuses on testing and proposing new solutions to these puzzles, focusing primarily on the neutrino sector.
One of the main goals of my research is to search for sterile neutrinos, hypothetical heavy partners of light neutrinos. These particles appear in some of the most motivated extensions of the Standard Model of particle physics, and may point to a new fundamental scale in Nature. In the case of a discovery, they would provide the first window into the dark sector of our Universe, with important consequences for neutrino masses, dark matter, and for explaining why there is so much more matter than anti-matter in our Universe.
Honors and Awards
Brazilian scholarship "Science without Borders" for undergraduates
"A Dark Seesaw Solution to Low Energy Anomalies: MiniBooNE, the muon (g-2)(g−2), and BaBar”, A. Abdullahi, M. Hostert, S. Pascoli, arxiv:2007.11813
"Pair production of dark particles in meson decays, M. Hostert, K. Kaneta, M. Pospelov, arXiv:2005.07102
“Dark Neutrinos and a Three Portal Connection to the Standard Model”, P. Ballett, M. Hostert, S. Pascoli, arxiv:1903.07589, Phys.Rev.D 101, 115025 (2020)
“Testing New Physics Explanations of MiniBooNE Anomaly at Neutrino Scattering Experiments”, C. Argüelles, M. Hostert, Y. Tsai, arXiv:1812.08768, Phys.Rev.Lett. 123 (2019) no.26, 261801
“Neutrino Masses from a Dark Neutrino Sector below the Electroweak Scale”, P. Ballett, M. Hostert, S. Pascoli, arxiv:1903.07590, Phys.Rev.D 99 (2019) 091701
“Z′ in neutrino scattering at DUNE”, P. Ballett, M. Hostert, S. Pascoli, Y. F. Perez-Gonzalez, Z. Tabrizi, R. Z. Funchal, arXiv:1902.08579, Phys.Rev.D 100 (2019) 055012
“Neutrino trident scattering at near detectors”, P. Ballett, M. Hostert, S. Pascoli, Y. F. Perez-Gonzalez, Z. Tabrizi, R. Z. Funchal, arXiv:1807.10973, JHEP 1901 (2019) 119