Work

Constraints on the Neutrino Extension of the Standard Model and Baryon Asymmetry of the Universe

Year: 2024

Type: article

Abstract: Heavy neutral leptons (HNLs) can cause a new effective interactions of particles in the Standard Model, particularly charged lepton flavor violation (cLFV) processes. The non-observation of cLFV processes, therefore, puts constraints on the parameters of the HNLs. We find the relations between the cLFV effective operators in the realistic case where active neutrino masses are non-zero and masses of the HNLs are non-degenerate. This allows us to strengthen the existing cLFV constraints. We also link the baryon asymmetry of the Universe to the same cLFV effective operators, which imposes a new restrictions on their values.

Source: Ukrainian Journal of Physics

DOI: 10.15407/ujpe69.11.853

Authors: V. Gorkavenko, O. Khasai, O. Ruchayskiy, M. Tsarenkova

Institutions: Taras Shevchenko National University of Kyiv, Bogolyubov Institute for Theoretical Physics, University of Copenhagen

Language: English

Topic: Particle physics theoretical and experimental studies

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: National Research Foundation of Ukraine, National Research Foundation

Award: G3621636106