Feasibility studies on the L1 trigger for large b-quark multiplicity events with the CMS Phase-II detector

The HL-LHC will collide protons at √s = 14 TeV, with a peak luminosity of 5 × 1034 cm−2 s−1, allowing an integrated luminosity of 250 fb−1 per year [1]. The large amount of statistics collected will allow the study of processes with low cross sections such as hh and tth, where we can have final states with high multiplicity of b quarks. Events will be characterised by high pileup < PU >: 140 − 200, which will require new approaches in order to discriminate signal from background. For the Phase-II the CMS detector will be upgraded and the L1 Trigger will exploit new features such as the use of tracks. A new trigger algorithm searching for µ inside jets was developed in this internship with the goal of efficiently pass events with b quarks and low rates involved. It is not yet possible to attest the improvement of this algorithm against the already implemented ones in the trigger menu.