SM gauge bosons

µ −e conversion in a model of electroweak scale right-handed neutrino mass. We perform a detailed analysis of the µ − e conversion within an extended version of the standard model (SM) with mirror symmetry and low energy of the electroweak scale of the type I seesaw neutrino mass generation. After a brief introduction to the model, we derive the µ − e conversing ratio at one-loop approximation, in which the running inside are W gauge boson or singly charged scalars accompanying with neutrinos, and neutral scalars with new leptons.

14p dianmotminh02 03-05-2024 5 2   Download

We consider a renormalizable theory, which successfully explains the number of Standard Model (SM) fermion families and whose non-SM scalar sector includes an axion dark matter as well as a field responsible for cosmological inflation. In such theory, the axion gets its mass via radiative corrections at one-loop level mediated by virtual top quark, right handed Majorana neutrinos and SM gauge bosons.

8p nhanchienthien 25-07-2023 5 3   Download

At present, it is well known that neutrinos are massive that contradicts the Standard Model (SM). The experimental data show that masses of neutrinos are tiny small and neutrinos mix with special pattern in approximately tribimaximal form. The neutrino masses, dark matter and the baryon asymmetry of Universe (BAU) are the facts requiring extension of the SM.

12p vijichoo2711 04-06-2021 9 1   Download