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Suwitchaya Setthahirun. Constraints on dark matter annihilation into electron and positron by e'e+ spectrum. Master's Degree(Physics). Kasetsart University. Office of the University Library. : Kasetsart University, 2022.
Constraints on dark matter annihilation into electron and positron by e'e+ spectrum
Name: Suwitchaya Setthahirun
Classification :.LCCS: QB791.3
LCSH:
Dark matter (Astronomy)
LCSH:
Annihilationism
Abstract:
Indirect detection is an alternative approach to investigate dark matter properties by using the products of dark matter annihilation such as electrons and positrons. In this work, we have used the data of electrons and positron as well as electron plus positron spectrum around the Solar neighborhood, measured by AMS-02, H.E.S.S., PAMELA, and Fermi-LAT to evaluate upper limits on dark matter annihilation cross-section for instance mass and cross-section. We have compared our models of electrons and positrons spectrum with the observational data to estimate the upper limits for different channels, including e+ e- and bb channels. Our models derive by a diffusion-loss equation, depend on the three processes for electrons and positrons, namely source term, propagation and, loss rates. The results have shown that the dark matter particles with a few masses below for electron-positron and muon-antimuon channels have been excluded. We have also demonstrated the upper limits are extremely affected by the different magnetic fields while the various interstellar radiation fields slightly disturbed on the upper limits as well. Conversely, the diffusion models barely cause any change to the upper limits.
Kasetsart University. Office of the University Library
Address:
Bangkok
Email:
tdckulib@ku.ac.th
Name: Maneenate Wechakama
Role:
Thesis Advisor
Created:
2022
Modified:
2025-07-10
Issued:
2025-07-10
วิทยานิพนธ์/Thesis
application/pdf
URL: https://www.lib.ku.ac.th/KUthesis/2565/suwitchaya-set-all.pdf
CallNumber:
QB791.3 .S89
eng
DegreeName: Master of Science
Level: Master's Degree
Descipline: Physics
Grantor: Kasetsart University
©copyrights Kasetsart University
RightsAccess:
ใช้เวลา
0.033436 วินาที
Suwitchaya Setthahirun
| Title | Contributor | Type |
|---|---|---|
| Constraints on dark matter annihilation into electron and positron by e\'e+ spectrum
มหาวิทยาลัยเกษตรศาสตร์ Suwitchaya Setthahirun | Maneenate Wechakama | วิทยานิพนธ์/Thesis |
Maneenate Wechakama