Digitala Vetenskapliga Arkivet

Endre søk
RefereraExporteraLink to record
Permanent link

Direct link
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
CP-violation in Supernova Neutrino Oscillations
Linköpings universitet, Institutionen för fysik, kemi och biologi, Teoretisk Fysik. Linköpings universitet, Tekniska högskolan.
2014 (engelsk)Independent thesis Advanced level (degree of Master (Two Years)), 20 poäng / 30 hpOppgaveAlternativ tittel
CP-brott i Supernovaneutrinooscillationer (svensk)
Abstract [en]

It is astonishing both how little and how much we know about neutrinos. On one hand, the neutrino is the second most abundant particle in our Universe. Neutrinos may be created in the Sun, core collapse supernovae, cosmic rays, geological background radiation, supernova remnants and in the Big Bang. On the other hand, they have unimaginably small masses and are unwilling to react with their surroundings. Because of their abundance and their inclination to show us physics beyond the standard model of particle physics, neutrinos are hoped to carry yet unknown information of the Universe. However, it will take some effort and time to persuade the neutrinos to tell us what they know.

Among the things we do not yet know of the neutrinos, is the -phase in the neutrino mixing matrix. If is in fact non-zero, neutrino flavour oscillations violate CP-symmetry. Also, if neutrino masses are introduced in the standard model through the See-Saw mechanism and if leptogenesis is a valid theory, CP-violation in neutrino oscillations could help explain why our Universe has no antimatter even though equal amounts of matter and antimatter should have been created at the Big Bang.

In this thesis, we investigate the flavour evolution of supernova neutrinos. We present the full Hamiltonian in the flavour basis for our system and identify how the different contributions affect the evolution and in which environment. We also present a theoretical motivation from [1, 2] as to how a non-zero -phase affects the flavour evolution and the final energy spectra. The analytical conclusion is that it has no impact under the assumptions made in our analysis. Thus, the -phase may not be measurable from supernova neutrinos.

sted, utgiver, år, opplag, sider
2014. , s. 54
Emneord [en]
CP-violation, δ-phase, neutrino oscillation, three-flavour, supernova
HSV kategori
Identifikatorer
URN: urn:nbn:se:liu:diva-109922ISRN: LITH-IFM-A-EX--14/2962--SEOAI: oai:DiVA.org:liu-109922DiVA, id: diva2:741647
Eksternt samarbeid
Kungliga Tekniska Högskolan
Fag / kurs
Physics
Tilgjengelig fra: 2014-08-29 Laget: 2014-08-28 Sist oppdatert: 2014-08-29bibliografisk kontrollert

Open Access i DiVA

fulltext(1047 kB)399 nedlastinger
Filinformasjon
Fil FULLTEXT01.pdfFilstørrelse 1047 kBChecksum SHA-512
6b7e0c042077ab26df0664c4096ef78127d5467c1a0578207ae8f3712f548c6d925fe731b2e40392e4738b438bfd7d853ac105fe94485441ed46e920d9f1d24f
Type fulltextMimetype application/pdf

Søk i DiVA

Av forfatter/redaktør
Elevant, Jessica
Av organisasjonen

Søk utenfor DiVA

GoogleGoogle Scholar
Totalt: 404 nedlastinger
Antall nedlastinger er summen av alle nedlastinger av alle fulltekster. Det kan for eksempel være tidligere versjoner som er ikke lenger tilgjengelige

urn-nbn

Altmetric

urn-nbn
Totalt: 361 treff
RefereraExporteraLink to record
Permanent link

Direct link
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf