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T: Fachverband Teilchenphysik

T 33: Higgs II

T 33.6: Vortrag

Dienstag, 20. März 2018, 17:45–18:00, Z6 - HS 0.004

Boosted Higgs tagging algorithms for the CMS Experiment — •Andrzej Novak, Luca Mastrolorenzo, Xavier Coubez, and Alexander Schmidt — RWTH Aachen, Aachen, Germany

Algorithms for the identification of two b-quarks within one jet have been applied successfully in the CMS Experiment. Deep neural networks facilitated the tagging of boosted Higgs jets with improved performance compared to classical methods. This improvement builds on previous results showing that for the specific topology of a fat jet with two subjets there is a considerable performance to be gained by using a dedicated tagger as opposed to either separately tagging the flavour of two standard jets or tagging the flavour of subjets within the fat jets. We are pursuing the application of such methods to the H->cc decay as well. The two main challenges are lower statistics in comparison to H->bb as well as lower efficiency, due to the properties of charm quarks.