Research Fellows Directory
Dr Alexander Oh
University of Manchester
According to the Standard Model of particle physics, the universe is made up from a small number of elementary particles, governed by a few fundamental forces. To study the physics of elementary particles the conditions which governed the universe at its beginning are reproduced in collider experiments: The Large Hadron Collider (LHC) at CERN started to collect data in 2010, a particle accelerator which probes deeper into the processes of the Big Bang than ever before. It will ultimately collide beams of protons at an energy of 14 TeV, which corresponds to an infant universe of only a fraction of a second in age.
Large detectors with several different components will detect the decay products emerging from the colliding beams. The ensemble of information from all detector elements is used to reconstruct what happened in the collision.
I am especially interested in the production of "gauge bosons", the carriers of the "electro-weak" force. This is the force that governs radioactive decays, for example. Looking at these processes is a powerful complement to the direct searches for new particles. The test of the gauge coupling parameters is a generic and sensitive test of new physics beyond the Standard Model, including models which don't contain any of the new particles we might anticipate.
The upgrade of LHC to Super LHC (SLHC) will boost the sensitivity by intensifying the colliding beams. This also poses new challenges to the detector elements to withstand the increased radiation levels. I also do research on new detector concepts, that can be used in the inner layers of the detector at an SLHC collider experiment. Other application areas can benefit from the results of this research activity, e.g. dosimetry and beam monitors.
To explore the physics potential of the LHC and to prepare for the next generation of even more powerful particle colliders, these two things are the essential components of my research.
Interests and expertise (Subject groups)