| |
 |
UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-23 18:20 |
 |
|
|
|
Conference: Bucharest University Faculty of Physics 2022 Meeting
Section: Nuclear and Elementary Particles Physics
Title:
Relic neutrinos from the Early Universe and the use of heavy nuclei
in their detection
Authors:
Denis BARBU, Mihaela PĀRVU, Ionel LAZANU
Affiliation:
University of Bucharest, Faculty of Physics
POBox MG-11, Magurele-Bucharest
E-mail
denis.barbu@s.unibuc.ro
mihaela.parvu@unibuc.ro
ionel.lazanu@g.unibuc.ro
Keywords:
neutrino relics, Big Bang Model, neutrino capture
Abstract:
Analyzing the Big Bang Model, one can predict the existence of a cosmic neutrino background, as in the case of the Cosmic Microwave Background. However, unlike photons, neutrinos barely interact with the matter, making their detection very difficult. By studying the theory of β decay of some heavy nuclei with very low decaying energy, we might achieve the energy resolution required to detect the cosmic neutrino background through neutrino capture on β-decaying heavy nuclei. We can also predict the average relic neutrino density with the Big Bang Model, which makes it possible to calculate the capture rate of relic neutrinos on β-active nuclei. If we consider the contribution of the over density caused by the gravitational attraction of the Milky Way this might improve the rate by a factor close to 2.
|
|
|
|