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Neutrino cosmology and baryon asymmetry

Grant number: 14/11744-3
Support type:Scholarships in Brazil - Scientific Initiation
Effective date (Start): August 01, 2014
Effective date (End): July 31, 2015
Field of knowledge:Physical Sciences and Mathematics - Astronomy - Extragalactic Astrophysics
Principal researcher:Pedro Cunha de Holanda
Grantee:Anderson Luiz Brandão de Souza
Home Institution: Instituto de Física Gleb Wataghin (IFGW). Universidade Estadual de Campinas (UNICAMP). Campinas , SP, Brazil

Abstract

One of the open problems in modern cosmology is to understand the asymmetry between matter and antimatter in our universe, called the baryon asymmetry. In the current Standard Cosmological Model, the Lambda-CDM, it is understood that this asymmetry is derived from a small asymmetry in the early universe, the order of one part in 10^{10}. Some theories attempt to explain such a baryon asymmetry through a violation of CP symmetry in the lepton sector, involving neutrinos, and a transmission for the baryon sector. That mechanism is called of Leptogenesis. This research project aims to study the possible contribution of neutrinos in the current asymmetry between matter and antimatter. (AU)

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