Baryogenesis through Leptogenesis and the Standard Model

Πολυχρονάκος Μαγκαφάς, Γιάννης

dc.contributor.author	Πολυχρονάκος Μαγκαφάς, Γιάννης
dc.date.accessioned	2024-11-21T08:57:22Z
dc.date.available	2024-11-21T08:57:22Z
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/60429
dc.identifier.uri	http://dx.doi.org/10.26240/heal.ntua.28125
dc.rights	Αναφορά Δημιουργού-Μη Εμπορική Χρήση-Όχι Παράγωγα Έργα 3.0 Ελλάδα	*
dc.rights.uri	http://creativecommons.org/licenses/by-nc-nd/3.0/gr/	*
dc.subject	Leptogenesis	en
dc.subject	Baryogenesis	en
dc.subject	Sphaleron	en
dc.subject	Right handed neutrino	en
dc.subject	Boltzmann equations	en
dc.subject	Λεπτογένεση	el
dc.subject	Βαρυογένεση	el
dc.subject	Σφάλερον	el
dc.subject	Δεξιόστροφα νετρίνα	el
dc.subject	Εξισώσεις Boltzmann	el
dc.title	Baryogenesis through Leptogenesis and the Standard Model	en
dc.title	Βαρυογένεση μέσω Λεπτογένεσης και το Καθιερωμένο Πρότυπο	el
heal.type	masterThesis
heal.classification	Physics	en
heal.language	el
heal.language	en
heal.access	free
heal.recordProvider	ntua	el
heal.publicationDate	2024-10-10
heal.abstract	A large number of models attempt to explain the prevalence of matter over antimatter in the universe. In this thesis we present the problem in the context of the Standard Model and expand upon a possible solution known as baryogenesis through leptogenesis. Special care is given to baryon+lepton number violation from a quantum anomaly in the Standard Model and its connection to topological effects. These effects, known as sphaleron and instanton transitions, are both a key part to leptogenesis and objects of interest for current experimental efforts. We also highlight the necessity of beyond the SM physics to explain the baryon asymmetry. In the second part, we illustrate the core idea of leptogenesis. We start with the simplest SM extension, the Seesaw Type I Mechanism, which introduces heavy right-handed Majorana neutrino and explains the neutrino masses. Then we proceed by explaining the basic and most instructive model of leptogenesis in which a lepton asymmetry is generated by the out of equilibrium decay of the lightest heavy neutrino in the early Universe. We provide both analytic and numerical calculations for said model and address the full Boltzmann equations. Finally we note important flavor and spectator processes and briefly enumerate the most popular leptogenesis models.	en
heal.advisorName	mavromatos, nikolaos
heal.committeeMemberName	Μαυρόματος, Νικόλαος
heal.committeeMemberName	Ήργες, Νίκος
heal.committeeMemberName	Φαράκος, Κωνσταντίνος
heal.academicPublisher	Σχολή Εφαρμοσμένων Μαθηματικών και Φυσικών Επιστημών	el
heal.academicPublisherID	ntua
heal.fullTextAvailability	false