Семинар отдела «Теория фундаментальных взаимодействий»

Дата и время: среда, 10 февраля 2021 г., в 11:00

Место: Онлайн-семинар в Zoom, Лаборатория теоретической физики им. Н.Н. Боголюбова

Тема семинара: «The relic neutrino composition as seen from Earth»

Докладчик: А. Н. Баушев

Аннотация:

Being generated, the relic neutrino background contained equal fractions of electron ν_e, muon ν_μ, and taon ν_τ neutrinos. We show that the gravitational field of our Galaxy and other nearby cosmic objects changes this composition near the Solar System, enriching it with the heaviest neutrino ν₃. This mass state is almost free of the electron component (only ∼2% of ν_e) and contains more muon component than the tau one. As a result, the relic background becomes enriched with taon and particularly muon neutrinos. The electron relic neutrinos are the rarest for a terrestrial observer: instead of 1/3, the relic background may contain only ≳20% of them. Moreover, the speaker will inform about recent significant changes in the acceptance procedure of arxiv.org.