Dr Ken Mimasu

Research groups

Research interests

• Collider phenomenology of physics beyond the standard model
• Effective field theories
• Extended scalar sectors
• Electroweak phase transition

Current research

I am interested in all aspects of collider phenomenology of physics beyond the standard model.
In particular, I have spent the last years focusing on the standard model effective field theory (SMEFT) approach to searching for new physics indirectly via new interactions among standrad model particles. I have worked on global statistical analyses of large high energy physics datasets to measure the parameters of the SMEFT, developed tools for precision predictions for collider processes in the SMEFT framework and produced a series of phenomenological studies aimed at maximising the sensitivity of colliders to indirect new physics effects.

I am also interested in exploring the connection between the space of effective theories and scattering amplitudes, exploiting the analytic properties of the latter to derive ab-initio theoretical constraints on the allowed parameter space, known as positivity bounds, that emerge from assuming a valid quantum field theoretic underliying model for new physics. I am keen to explore the phenomenological consequences of these bounds, in particular how we can use these to improve our sensitivity to effective interactions and test the validity of these assumptions at colliders.

I have also worked exensively on theories involving extended scalar sectors, such as axion-like particles and theoreis with additional Higgs fields in the context of generating the matter anti-matter asymmetry of the universe though a strongly first-order electroweak phase transition and explaining the observed abundance of dark matter.

Research projects