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Neutrinos from Dark Matter Annihilation in the Sun
KTH, School of Engineering Sciences (SCI), Theoretical Physics.
KTH, School of Engineering Sciences (SCI), Theoretical Physics.
2013 (English)Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
Abstract [en]

Dark Matter (DM) is believed to consist ofWeakly Interactive Massive Particles (WIMPs)

which interact only through gravity and the weak nuclear force. These particles can become

trapped in gravitational wells such as the Sun and a theoretical value of the capture

rate can be calculated. At high particle density the WIMPs annihilating spontaneously

into Standard Model (SM) particles. Due to particle equilibrium the total annihilation

rate can be related to the capture rate by a simple expression. This report will focus on

calculating the capture rate and the related annihilation rate as well as calculating the

neutrino  ux of the Sun. At rst we will give a brief introduction to cosmology and a

theoretical argument for the WIMPs as the prime DM candidate. Then we will look at

the theoretical background and the mechanism through which WIMPs become trapped

and evaporate or annihilate. Finally we will perform a numerical analysis of the WIMP

cycle within the Sun and calculate the capture rate for a variety of theoretical WIMP

masses. We will look at the capture rate due to scattering both by hydrogen nucleii and

by more massive elements. The Scattering by hydrogen will be the prime contributor to

the total capture rate and is the only spin dependent contribution.

Place, publisher, year, edition, pages
2013. , 23 p.
Keyword [en]
Dark Matter, WIMP annihilation, neutrino, the Sun.
National Category
Engineering and Technology
URN: urn:nbn:se:kth:diva-127024OAI: diva2:643413
Available from: 2013-08-27 Created: 2013-08-27 Last updated: 2013-08-27Bibliographically approved

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