Sökning: "neutrino flavor"

Hittade 5 uppsatser innehållade orden neutrino flavor.

1. 1. Expansions of neutrino oscillation and decay probabilities in matter

   Master-uppsats, KTH/Fysik

   Författare :Jesper Grönroos; [2023]
   Nyckelord :Theoretical physics; Particle physics; Neutrino physics; Neutrino oscillations; Series expansions; Physics beyond the Standard Model; Teoretisk fysik; Partikelfysik; Neutrinofysik; Neutrinooscillationer; Serieutvecklingar; Fysik bortom Standardmodellen;

   Sammanfattning : We consider a simple model for invisible neutrino decay as a sub-leading effect in the standard three-flavor neutrino oscillation framework, and use the Cayley–Hamilton formalism to obtain a full set of neutrino oscillation probabilities in matter. These are given as analytical series expansions in the small parameters α ∼ O(λ^2) and s_13 ∼ O(λ), where λ ≡ 0. LÄS MER

3. 2. Birefringence: Effects and Implications on In-Ice Radio Detection of High-Energy Neutrinos

   Master-uppsats, Uppsala universitet/Högenergifysik

   Författare :Nils Heyer; [2022]
   Nyckelord :Birefringence; Cosmic Neutrinos; In-ice radio propagation;

   Sammanfattning : The detection of high-energy neutrinos in the EeV range requires new detection techniques to cope with the small expected flux. The radio detection method, utilizing Askaryan emission, can be used to detect these neutrinos in polar ice. LÄS MER

4. 3. Investigations into neutrino flavor reconstruction from radio detector data using convolutional neural networks

   Kandidat-uppsats, Uppsala universitet/Högenergifysik

   Författare :Oscar Ericsson; [2021]
   Nyckelord :neutrino; neutrino flavor; flavor reconstruction; radio technique; deep learning; neural network;

   Sammanfattning : As the IceCube Neutrino Observatory seeks to expand its sensitivity to high PeV-EeV energies by means of the radio technique, the need for fast, efficient and reliable reconstruction methods to recover neutrino properties from radio detector data has emerged. The first recorded investigation into the possibilities of using a neural network based approach to flavor reconstruction is presented. LÄS MER

5. 4. Neutrino oscillations at very high energy/matter density

   Master-uppsats, KTH/Fysik

   Författare :Mathilde Guillaud; [2020]
   Nyckelord :Theoretical Physics; Neutrino Oscillations; Astrophysical Neutrinos; Teoretisk fysik; Neutrinooscillationer; Astrofysiska neutriner;

   Sammanfattning : Neutrino oscillations in matter can be studied in different regimes, depending on the energy of the incoming neutrinos and the matter density of the medium. In this thesis we investigate neutrino oscillations in dense matter at very high energy (TeV-PeV range), taking into account the absorption that the neutrinos may undergo in such dense media. LÄS MER

7. 5. Kosmiska Neutriner

   Kandidat-uppsats, KTH/Skolan för teknikvetenskap (SCI)

   Författare :Lara Mohatadi; Rasoul Lasek; [2020]
   Nyckelord :;

   Sammanfattning : Neutrinoobservationer kan ge mycket information om vad som händer ute i rymden. Den observationen och studien som ger den mest konkreta informationen är smaksammansättningar av neutriner som når jorden efter att den propagerat i rymden från dess källa. LÄS MER