Speaker
Description
Advanced boosted-jet taggers, such as those involving H->bb/cc or t/W/Z tagging, have significantly enhanced the sensitivity of many analyses at the LHC. Recently, an inclusive pre-trained large-R jet model has been successfully deployed in the CMS experiment. In this talk, we discuss two novel potentials brought by this technique. Firstly, the novel X->cb tagging technique can be utilized to measure the W->cb decay, opening a new avenue for constraining the CKM matrix element Vcb at the LHC, with performance surpassing traditional W->cb measurement methods. Additionally, the latent features of the pre-trained model can serve as new jet variables. When combined with other event-level features, it can facilitate high-performance event-level classifiers, leading to enhanced results in e.g., H->bb and HH->4b analyses.
