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| Author(s): |
Davi Bastos Costa
Total Authors: 1
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| Document type: | Master's Dissertation |
| Press: | São Paulo. |
| Institution: | Universidade de São Paulo (USP). Instituto de Física (IF/SBI) |
| Defense date: | 2020-12-01 |
| Examining board members: |
Gustavo Alberto Burdman;
Chee Sheng Fong
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| Advisor: | Gustavo Alberto Burdman |
| Abstract | |
In this dissertation, I will present a twin Higgs model relating the spontaneous breaking of Z2 symmetry, the cosmological constraints of twin Higgs models, and neutrino masses. The Z2 symmetry is exact in the model and it contains an SU(2) triplet with hypercharge 1 and its twin copy in addition to the degrees of freedom present in the original twin Higgs model. The vacuum expectation value of the scalar sector breaks spontaneously Z2 and electroweak symmetry. Then, by type-II seesaw mechanism, the Standard Model neutrinos get small masses and their twin gets large masses mitigating the dark radiation problem. (AU) | |
| FAPESP's process: | 18/09833-9 - Dark matter and twin Higgs models |
| Grantee: | Davi Bastos Costa |
| Support Opportunities: | Scholarships in Brazil - Master |