Problems of the Standard Model and their possible solutions

Speaker: Prof. Bohdan Grządkowski
Affiliation: Faculty of Physics, University of Warsaw

Link to the MSTeams meeting
Meeting ID: 379 404 819 80
Access code: 4xsXRu

Although the Standard Model of the strong and electroweak interactions is being tested with increasing precision, there are reasons to believe that it is not the final theory of the microworld. This model has some aesthetic shortcomings, e.g., its original version contains 21 independent parameters, some of which differ by many orders of magnitude. Many independent measurements confirm the existence of dark matter, while the Standard Model does not contain a particle that could be a candidate for dark matter. This is the most serious shortcoming of the model. A problem of similar importance is the unexplained and observed baryon asymmetry (we observe only a negligible amount of antimatter in the universe). As a result, most researchers believe in the existence of a more fundamental theory on a much higher energy scale. In such a scenario, the Standard Model would be merely a low-energy approximation of a more fundamental theory that solves its problems. In my lecture I will discuss the possibility of removing the above difficulties by expanding the Higgs field sector of the electroweak theory.

Chairman: Prof. Sławomir Breiter

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