Phenomenology in multi-scalar extensions of the Standard Model
Summary, in English
Paper I. In this paper, we present an alternative solution for avoiding GUT-scale lepton masses in so-called trinification based GUT-models (T-GUTs). Rather than introducing several copies of the tri-triplets, which is the conventional approach, we solve the issue by embedding the symmetries into an E8 group.
Paper II. This paper involves a more detailed study of the model proposed in Paper I. Some of its features is an absence of the mu-problem and a universal Yukawa coupling for all chiral fermions.
Paper III. Here, we classify all anomaly-free implementations of a 2HDM with a gauged Abelian symmetry and the SM fermion content. The resulting 11 models are then compared under a range of experimental bounds, from which we identify the most promising ones.
Paper IV. In this paper, we again classify and compare all anomaly-free implementations of a 2HDM with a gauged Abelian symmetry, but this time around also including two generations of right-handed neutrinos. The right-handed neutrinos are incorporated to provide a mechanism for the neutrinos to obtain a mass, here via a type-I seesaw mechanism. In total, there are 16 valid models, which are all compared, both for normal- and inverted ordering. Two models are identified as the most promising candidates for future studies.
- Subatomic Physics
- BSM, 2HDMs
- BSM, 2HDMs
- Roman Pasechnik
- ISBN: 978-91-7895-570-1
- ISBN: 978-91-7895-571-8
18 September 2020
Lundmarksalen, Sölvegatan 27, Lund. Join via zoom: https://lu-se.zoom.us/j/66788720581?pwd=eHhYTWZIWHdYWWkwdUcwbk9LL0YzZz09 Lösenord: 497457
- David Miller (Dr.)