Fredagskollokvium: Finding our way through theory space -- Global fits of New Physics theories
Anders Kvellestad, Department Physics, UiO
There is a myriad of proposed theories for particle physics beyond the Standard Model. Further, each new theory comes with a set of free parameters, with the expected phenomenology varying across the parameter space. This great variety of possible physics scenarios is mirrored by a diverse field of experiments looking for signs of new physics.
The most powerful approach for assessing the level of agreement between a new theory and experimental results is to perform a "global fit" -- a comprehensive and statistically rigorous comparison of theory predictions against all the available data. In this talk I will give an introduction to global fits and the recently released tool GAMBIT, an open-source tool for performing large-scale global fits. I will also summarize the results from the first set of physics studies performed by the GAMBIT Collaboration.