STUDY OF CHARMED HADRONS LIFETIME WITH 400 GEV PROTONS AT THE CERN-SPS

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2022-9-2

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Öz, Canay

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The Standard Model of particle physics contains three active neutrinos associated to three charged leptons: electron, muon and tau. Electron neutrino and muon neutrino were experimentally observed in 1956 and 1962 respectively but observation of tau neutrino was released at the beginning of 21st century as its observation requires special detection techniques. Only few measurements with limited statistics have been done in order to measure its properties. The DsTau project at CERN has been proposed to study tau neutrino production aiming precise measurement of tau neutrino production cross section. In addition, the analysis of 2.3 × 10^8 proton interactions will yield 10^5 charmed decay which will allow us to extract many more physical quantities like measurement of charmed hadron lifetime and measurement of interaction lengths of charmed hadrons. In this thesis work, the track reconstruction performance of the DsTau detector has been studied in detail and using a sub-sample of 2018 pilot run, the charmed hadron lifetimes have been obtained with the help of MC simulations. The obtained lifetimes are consistent with PDG values.

Subject Keywords

DsTau experiment, Standard Model, Charmed particles

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https://hdl.handle.net/11511/99467

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Graduate School of Natural and Applied Sciences, Thesis

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Citation Formats

C. Öz, “STUDY OF CHARMED HADRONS LIFETIME WITH 400 GEV PROTONS AT THE CERN-SPS,” M.S. - Master of Science, Middle East Technical University, 2022.