Weakly interacting dark matter in walking technicolor theories
Several lines of evidence support the existence of the dark matter in the Universe. In the light of the present observations the particle dark matter, and in particular the WIMP scenario is a very promising alternative to solve the dark matter problem. In this context recent minimal walking techicolor model motivated dark matter models have been studied. The minimal walking techinicolor and the minimal extension of it, which can successfully provide a dynamical origin for the electroweak symmetry breaking as well as the unification of the standard model coupling constants, gives rise to natural dark matter candidates such as fourth family heavy neutrinos and SU(2) adjoint matter. A general model which combines these two dark matter scenarios has been considered here and numerical results and predictions in certain limits have been discussed. In general these models can produce the right amount of dark matter and the dark matter particles are within the reach of upcoming experiments. Thus, if existing, they may be detected in near future. One important side result in this thesis considers the effects of the Majorana phases of mixing particles to the model parameter space. Because of these phases, which are related to the mass eigenvalue positivity of the mixing Majorana states, the general physical parameter space of the model is larger than what usually has been thought. Future studies include a complete Monte Carlo analysis of the parameter space, including all experimental constrains, of the most general 3 × 3 mixing dark matter model introduced in this thesis. Also a formulation of the general Feynman rules for the mixing Majorana particles is one of the immediate research goals. ...
PublisherUniversity of Jyväskylä
MetadataShow full item record
- Väitöskirjat 
Showing items with similar title or keywords.
Heikinheimo, Matti (University of Jyväskylä, 2010)This work consists of an overview part and three research papers. The subject of this work is a class of models for dynamical electroweak symmetry breaking, and new generations of fermionic matter. An introductory overview ...
Muon-electron lepton-flavor-violating transitions : Shell-model calculations of transitions in 27Al Kostensalo, Joel; Suhonen, Jouni; Civitarese, O. (American Physical Society, 2018)In this paper we present the results of large-scale shell-model calculations of muon-to-electron lepton-flavorviolating transitions for the case of the target nucleus 27Al. We extend the previous shell-model calculations, done ...
Ala-Mattinen, Kalle; Kainulainen, Kimmo (Institute of Physics, 2020)The dark matter annihilation channels sometimes involve sharp resonances. In such cases the usual momentum averaged approximations for computing the DM abundance may not be accurate. We develop an easily accessible momentum ...
Fixed versus Growth Mindset Does not Seem to Matter Much : A Prospective Observational Study in Two Late Bachelor level Computer Science Courses Kaijanaho, Antti-Juhani; Tirronen, Ville (ACM, 2018)Psychology predicts that a student’s mindset—their implicit theory of intelligence—has an effect on their academic performance. We attempted to corroborate this in the computer science education context by asking the ...
Kostensalo, Joel; Suhonen, Jouni; Zuber, K. (American Physical Society, 2020)Radiochemical experiments for low-energy solar-neutrino detection have been making headlines by exploiting the isotopes 37Cl and 71Ga. Such a very low-threshold measurement of this type can also be performed using 205Tl, ...