Endre søk
RefereraExporteraLink to record
Permanent link

Direct link
Referera
Referensformat
  • apa
  • harvard1
  • 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
Effective neutrino mixing and oscillations in dense matter
KTH, Skolan för teknikvetenskap (SCI), Teoretisk fysik, Teoretisk partikelfysik.ORCID-id: 0000-0001-5948-9152
KTH, Skolan för teknikvetenskap (SCI), Teoretisk fysik, Teoretisk partikelfysik.ORCID-id: 0000-0002-3525-8349
2005 (engelsk)Inngår i: Physics Letters B, ISSN 0370-2693, E-ISSN 1873-2445, Vol. 609, nr 3-4, s. 330-338Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

We investigate the effective case of two-flavor neutrino oscillations in infinitely dense matter by using a perturbative approach. We begin by briefly summarizing the conditions for the three-flavor neutrino oscillation probabilities to take on the same form as the corresponding two-flavor probabilities. Then, we proceed with the infinitely dense matter calculations. Finally, we study the validity of the approximation of infinitely dense matter when the effective matter potential is large, but not infinite, this is done by using both analytic and numeric methods.

sted, utgiver, år, opplag, sider
Elsevier B.V. , 2005. Vol. 609, nr 3-4, s. 330-338
Emneord [en]
analytic method; article; calculation; mathematical computing; mathematical model; neutrino; oscillation; probability; validation process
HSV kategori
Identifikatorer
URN: urn:nbn:se:kth:diva-7246DOI: 10.1016/j.physletb.2005.01.063ISI: 000227534200022Scopus ID: 2-s2.0-14144254930OAI: oai:DiVA.org:kth-7246DiVA, id: diva2:12201
Forskningsfinansiär
Swedish Research Council, 621-2001-1611Swedish Research Council, 621-2002-3577
Merknad

QC 20100630

Tilgjengelig fra: 2011-06-17 Laget: 2007-05-31 Sist oppdatert: 2017-12-14bibliografisk kontrollert
Inngår i avhandling
1. Theoretical and Phenomenological Studies of Neutrino Physics
Åpne denne publikasjonen i ny fane eller vindu >>Theoretical and Phenomenological Studies of Neutrino Physics
2007 (engelsk)Doktoravhandling, med artikler (Annet vitenskapelig)
Abstract [en]

This thesis is devoted to the theory and phenomenology of neutrino physics. While the standard model of particle physics has been extremely successful, it fails to account for massive neutrinos, which are necessary to describe the observations of neutrino oscillations made by several different experiments. Thus, neutrino physics is a possible window for exploring the physics beyond the standard model, making it both interesting and important for our fundamental understanding of Nature.

Throughout this thesis, we will discuss different aspects of neutrino physics, ranging from taking all three types of neutrinos into account in neutrino oscillation experiments to exploring the possibilities of neutrino mass models to produce a viable source of the baryon asymmetry of the Universe. The emphasis of the thesis is on neutrino oscillations which, given their implication of neutrino masses, is a phenomenon where other results that are not describable in the standard model could be found, such as new interactions between neutrinos and fermions.

sted, utgiver, år, opplag, sider
Stockholm: Teoretisk fysik, 2007. s. xii, 102, [7]
Serie
Trita-FYS, ISSN 0280-316X ; 2007:31
Emneord
neutrino mass, neutrino mixing, neutrino oscillations, matter effects, non-standard effects, the day-night effect, solar neutrinos, accelerator neutrinos, exact solutions, three-flavor effects, large density, neutrino decay, neutrino decoherence, neutrino absorption, non-standard neutrino interactions, seesaw mechanism, stability criteria, leptogenesis
HSV kategori
Identifikatorer
urn:nbn:se:kth:diva-4415 (URN)978-91-7178-646-3 (ISBN)
Disputas
2007-06-11, Oskar Kleins auditorium (FR4), Huvudbyggnaden, AlbaNova, Roslagstullsbacken 21, Stockholm, 10:00
Opponent
Veileder
Merknad
QC 20100630Tilgjengelig fra: 2007-05-31 Laget: 2007-05-31 Sist oppdatert: 2010-06-30bibliografisk kontrollert
2. Matter and damping effects in neutrino mixing and oscillations
Åpne denne publikasjonen i ny fane eller vindu >>Matter and damping effects in neutrino mixing and oscillations
2005 (engelsk)Licentiatavhandling, med artikler (Annet vitenskapelig)
Abstract [en]

This thesis is devoted to the study of neutrino physics in general and the study of neutrino mixing and oscillations in particular. In the standard model of particle physics, neutrinos are massless, and as a result, they do not mix or oscillate. However, many experimental results now seem to give evidence for neutrino oscillations, and thus, the standard model has to be extended in order to incorporate neutrino masses and mixing among different neutrino flavors.

When neutrinos propagate through matter, the neutrino mixing, and thus, also the neutrino oscillations, may be significantly altered. While the matter effects may be easily studied in a framework with only two neutrino flavors and constant matter density, we know that there exists (at least) three neutrino flavors and that the matter density of the Universe is far from constant. This thesis includes studies of three-flavor effects and a solution to the two-flavor neutrino oscillation problem in matter with an arbitrary density profile.

Furthermore, there have historically been attempts to describe the neutrino flavor transitions by other effects than neutrino oscillations. Even if these effects now seem to be disfavored as the leading mechanism, they may still give small corrections to the neutrino oscillation formulas. These effects may lead to erroneous determination of the fundamental neutrino oscillation parameters and are also studied in this thesis in form of damping factors.

sted, utgiver, år, opplag, sider
Stockholm: KTH, 2005. s. x, 57
Serie
Trita-FYS, ISSN 0280-316X ; 2005:21
Emneord
Engineering physics, Neutrino oscillations, neutrino mixing, matter effects, damping effects, the day-night effect, solar neutrinos, Teknisk fysik
HSV kategori
Identifikatorer
urn:nbn:se:kth:diva-301 (URN)91-7178-016-5 (ISBN)
Veileder
Merknad
QC 20101124Tilgjengelig fra: 2005-07-15 Laget: 2005-07-15 Sist oppdatert: 2011-12-09bibliografisk kontrollert

Open Access i DiVA

fulltext(308 kB)150 nedlastinger
Filinformasjon
Fil FULLTEXT01.pdfFilstørrelse 308 kBChecksum SHA-512
26ff7bee511c11008a7ae5e345df76d14841e19daf9993bad402cfd2d40528063e525e6ce367133218a65d386d31f0e7ecd0ec1c45bf459f801b0ad7aec1a0e5
Type fulltextMimetype application/pdf

Andre lenker

Forlagets fulltekstScopusScienceDirecthttp://arxiv.org/abs/hep-ph/0409061

Personposter BETA

Blennow, MattiasOhlsson, Tommy

Søk i DiVA

Av forfatter/redaktør
Blennow, MattiasOhlsson, Tommy
Av organisasjonen
I samme tidsskrift
Physics Letters B

Søk utenfor DiVA

GoogleGoogle Scholar
Totalt: 150 nedlastinger
Antall nedlastinger er summen av alle nedlastinger av alle fulltekster. Det kan for eksempel være tidligere versjoner som er ikke lenger tilgjengelige

doi
urn-nbn

Altmetric

doi
urn-nbn
Totalt: 336 treff
RefereraExporteraLink to record
Permanent link

Direct link
Referera
Referensformat
  • apa
  • harvard1
  • 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