Search for a heavy scalar boson in the ZZ ⟼ l+l-νν decay channel and reconstruction of high-energy muons in the CMS experiment
(2018)
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AlessioMagitteri_310713_PhD_Thesis_30April2018.pdf
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- Authors
- Supervisors
- Bruno, Giacomo
- Abstract
- With the observation of the Higgs Boson by the CMS and ATLAS experiments in 2012 the Standard Model of Particle Physics (SM), which represents the maximum expression of human understanding of the infinitely small, is considered complete since all its predictions are confirmed. However both theoretical and experimental evidence indicates that the SM cannot be the ultimate model of Nature. It should rather be considered as an effective description of a more fundamental theory that should emerge at a higher energy scale. During the last decades a lot of extensions of the SM (BSM) were proposed, but no evidence has yet been found of any of them. The first part of this thesis describes the analysis of the data collected at center-of-mass energies of 13 TeV with the CMS detector during the year 2016 in a search for a new heavy scalar resonance. By looking at the ZZ—> 2l2ν decay channel limits were set on the production cross section of a hypothetical new scalar resonance as a function of its mass and width. The second part of this thesis describes the Dynamic Truncation Algorithm developed in order to reconstruct efficiently high-energy muons produced in the proton-proton collisions of the LHC.
- Affiliations
Citations
Magitteri, A. (2018). Search for a heavy scalar boson in the ZZ ⟼ l+l-νν decay channel and reconstruction of high-energy muons in the CMS experiment. https://hdl.handle.net/2078.5/126385