Research Fellows Directory
Dr Sneha Malde
University of Oxford
Matter and anti-matter were created equally during the big-bang. The world we see around us is composed primarily of matter instead of a sea of energy. Our existence is due to some asymmetry that allowed matter to dominate over anti-matter. This asymmetry or "CP-violation" cannot be explained by our standard model of particle physics. My goal is to use data collected at CERN to look for evidence of the new physics that must be behind the creation of this CP-violation.
I will be using the data from the LHCb experiment of which I have been a member for the past 6 years. This is one of the experiments based on the Large Hadron Collider at CERN. The detector is optimized to look at the decays of particles containing beauty and charm quarks. The huge amount of data to be collected over the next three years provides a great opportunity to make a breakthrough. CP-violation in the beauty sector is well established though only at scales far lower than required to explain the universe. Here I intend to make a high precision measurement of one of the standard model CP violation parameters. The high precision will allow us to look for small deviations from the standard model which could shed light on the new physics processes that take place at very high energies. CP violation is yet to be observed in the charm sector as it is predicted to be extremely small. However a number of new physics models cause an enhancement. The sheer size of the dataset would allow us to see large enhancements - if they exist.
By pursuing the analysis of both beauty and charm datasets and exploiting the similarity of chosen decay modes I hope to perform a set of measurements that would contribute to the observation of phenomena in the laboratory that cannot be explained by the standard model and would further constrain the types of new physics models that could be contributing to the CP violation that led to a matter dominated universe.
Interests and expertise (Subject groups)