| CMS Note | |
| Report number | CMS-CR-2024-313 |
| Title | Displaced Vertex Track Trigger for the CMS Phase-2 Upgrade |
| Author(s) | Ryan Edward Mccarthy |
| Publication | 2024 |
| Collaboration | CMS Collaboration |
| Imprint | 15 Nov 2024 |
| Number of pages | 7 |
| Presented at | 12th Edition of the Large Hadron Collider Physics Conference, Boston, United States, 3 - 7 Jun 2024 |
| Subject category | Detectors and Experimental Techniques |
| Accelerator/Facility, Experiment | CERN LHC ; CMS |
| Keywords | Tracker ; Trigger |
| Abstract | As part of the CMS Phase-2 upgrade, track information from the outer tracker will be available at the Level-1 trigger and with this comes the expanded opportunity to trigger on physics objects such as long-lived particles. Presented here is a feasibility study in calculating displaced vertex information using an extended version of the Level-1 tracking that identifies displaced tracks. Combinations of tracks are used to form vertex candidates and a gradient-boosted decision tree is used to distinguish between misidentified and genuine displaced vertices. A simulated sample of an exotic Higgs boson decay to dark photons is used as the benchmark signal. Using this method, vertices with transverse distances from the beamline ranging from 0.02 to 20.0 cm can be reconstructed. This study is based on simulation only and therefore does not account for hardware limitations. |
Record created 2024-12-02, last modified 2024-12-02
