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A Search for Heavy Stable Charged Particles With the CMS Experiment Using Missing Transverse Energy Triggers
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A Search for Heavy Stable Charged Particles With the CMS Experiment Using Missing Transverse Energy Triggers
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Dissertation
A Search for Heavy Stable Charged Particles With the CMS Experiment Using Missing Transverse Energy Triggers
2025
Overview
A search for beyond the Standard Model particles that are heavy, long-lived, and charged in protonproton collisions at center-of-mass energy √ s = 13 TeV is presented. The datasets used are recorded by the Compact Muon Solenoid detector in 2017 and 2018, triggered with missing transverse energy in the events and corresponding to an integrated luminosity of 101 fb−1. The particles are required to have large energy deposited per path length (dE/dx) in the silicon pixel detector and in the silicon strip detector. The ABCD method utilizes the independence of the dE/dx discriminators in the two detectors to predict the number of background events in data. No significant excess of events over the predicted number of background events is observed. The results of this signature driven search are interpreted in the context of signal hypotheses, specifically for two models of the pair-produced supersymmetric gluino R-hadrons. The gluino R-hadron cloud interaction model is excluded at the 95% confidence level with a mass up to 2.182 TeV (compared to an expected limit of 2.089 TeV), and the gluino R-hadron charge suppressed model is excluded at the 95% confidence level with a mass up to 2.160 TeV (compared to an expected limit of 2.077 TeV). These observed limits are the best to date for detector-stable gluino R-hadron models.
Publisher
ProQuest Dissertations & Theses
Subject
ISBN
9798273324664
