Suárez Barbosa, Cristhian A.
Loading...
1 results
Publication Search Results
Now showing 1 - 1 of 1
Publication Study of the effects of detector issues on emerging jets for possible signatures of dark matter(2023-05-12) Suárez Barbosa, Cristhian A.; Malik, Sudhir; College of Arts and Sciences - Sciences; Santana Colón, Samuel A.; Marrero Soto, Pablo J.; Department of Physics; Font Santiago, Cristopher B.The main issues encountered during data collection between 2016 and 2018 in the CMS detector are discussed in this work. We focus on identifying how these issues impact experimental physics beyond the Standard Model (SM). A set of potential new physics scenarios exist in this field, which requires knowing what objects can be discovered and in which direction to search for evidence of new physics. One such object is the emerging jet, created when dark mesons decay into SM quarks with a long lifetime, causing the jets to appear in a different location inside the detector. As the dark mesons do not interact with the detector, they travel some distance before decaying. Each set of SM particles originates at a different distance from the interaction point. The detection of possible emerging jets relies on high precision. In 2018, a power loss was experienced in a section of one end of the hadronic endcap calorimeter during the data-taking period in the CMS (Compact Muon Solenoid). The affected region, located at 1.3 < |η| < 3, impacts the jet energy measurement. Additionally, the possible mitigation of deadtime induced in the APV25 readout chip due to the passage of a highly-ionizing particle (HIP) observed in 2016 was validated. This effect, referred to as the "HIP effect," worsens with increasing luminosity, and the loss of hits causes a loss in hit efficiency, tracking efficiency, and the signal-to-noise ratio for track hits, as well as an increase in the number of short reconstructed tracks with hits only in the pixel detector.