# Probing new physics with displaced vertices: muon tracker at CMS

## TL;DR

This paper explores the potential of CMS muon trackers to detect long-lived particles through displaced vertices, using heavy neutral leptons and Chern-Simons portal as case studies.

## Contribution

It demonstrates how CMS muon trackers can be utilized to search for and analyze long-lived particles via displaced vertices, highlighting their importance in new physics detection.

## Key findings

- CMS muon tracker can effectively identify displaced vertices.
- Heavy neutral leptons can be studied through this method.
- Chern-Simons portal provides a viable scenario for long-lived particle detection.

## Abstract

Long-lived particles can manifest themselves at the LHC via "displaced vertices" - several charged tracks originating from a position separated from the proton interaction point by a macroscopic distance. Here we demonstrate a potential of the muon trackers at the CMS experiment for displaced vertex searches. We use heavy neutral leptons and Chern-Simons portal as two examples of long-lived particles for which the CMS muon tracker can provide essential information about their properties.