LHC Physics Center

What I will be working on:

I will be working on developing a set of new machine-learning-based taggers for SM and BSM long-lived particles (LLPs) with new physics insights, aiming to boost the performance of flavor tagging (identification of SM b/c jets) as well as the identifications of challenging exotic LLP signatures. At the same time, in order to fill important gaps in LLP phase space, such as low-HT displaced jets, I will work on developing and implementing new LLP triggers for CMS in Run 3. In addition, I will also work on the Phase-2 upgrade of the CMS outer tracker.

My role in CMS past and present:

I joined CMS in 2015 as a graduate student. I developed and accomplished the full analysis of the Run-2 inclusive displaced-jet search of CMS, which provides the current best sensitivities to a large variety of long-lived models with hadronic decays. I also made major contributions to the luminosity measurements based on pixel cluster counting and HF calorimeter, which are the main luminometers of CMS in Run 2. I served as the co-convener of the BRIL DPG group from 2019 to 2020. Right now I'm also working on a search for charged Higgs decaying to top and bottom quarks, which is usually the dominating decay mode of charged Higgs when its mass is larger than 200 GeV. For this search I have developed and implemented a set of new analysis techniques that can significantly improve the sensitivities to this important signature.