Computing environment for phenomenology of lepton decays
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Date
2018
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Institute of Nuclear Physics Polish Academy of Sciences
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Creative commons license
Abstract
Rozprawa przedstawia środowisko obliczeniowe dla fenomenologi rozpadów leptonów
τ . Do badan użyto biblioteki Monte Carlo TAUOLA pozwalającej na generowanie
rozpadów leptonów τ . Praca koncentruje się na rozpadach typu τ - →(πππ) - ντ.
Tworzenie modeli teoretycznych powinno być oparte o dane experymentalne, ze
względu na konieczność optymalizowania przewidywań oddziaływań silnych pośrednich
energii. Zbadano jak jakość danych oraz sposób ich przedstawienia może potencjalnie
wpływać na uwydatnienie lub ukrycie właściwości fizycznych opisywanych
rozpadów.
Rozpady leptonów τ są także narzędziem do badania innych procesów, jak chociażby
pomiary parametrów bozonu Higgsa. Takie pomiary mogą być zależne od
użytego modelowania rozpadów lepronów τ . Z pomocą sieci neuronowych podjęto
próbę oceny jak silna jest to zależność.
Praca opisuje również rozwój narzędzia TAUOLA w kontekście potrzeb
przyszłych eksperymentów, a także dyskutuje dalsze ścieżki rozwoju. Umotywowanie
zmian również zostało opisane.
The thesis discusses computing environment for phenomenology of τ lepton decays. The study is performed with TAUOLA Monte Carlo library and concentrates on decays τ - →(πππ) - ντ. Importance of connection between the experimental data and model building is investigated. Special emphasis is put on available data distributions as a limiting factor in model development. τ decays apart from being interesting field on their own are also used as a tool for measurement of hard electroweak and also quantum chromo-dynamic processes. Investigation of how different theoretical models can affect such measurements was done with help of Neural Networks on the example of Higgs charge parity state measurement Last but least, future needs of experiments and possible paths of tools development are studied and discussed together with recent improvements in TAUOLA library. Most notably new initialization is introduced and option for user-programmed models is added. Context behind introduced modifications and features is given.
The thesis discusses computing environment for phenomenology of τ lepton decays. The study is performed with TAUOLA Monte Carlo library and concentrates on decays τ - →(πππ) - ντ. Importance of connection between the experimental data and model building is investigated. Special emphasis is put on available data distributions as a limiting factor in model development. τ decays apart from being interesting field on their own are also used as a tool for measurement of hard electroweak and also quantum chromo-dynamic processes. Investigation of how different theoretical models can affect such measurements was done with help of Neural Networks on the example of Higgs charge parity state measurement Last but least, future needs of experiments and possible paths of tools development are studied and discussed together with recent improvements in TAUOLA library. Most notably new initialization is introduced and option for user-programmed models is added. Context behind introduced modifications and features is given.
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Uznanie autorstwa-Użycie niekomercyjne-Na tych samych warunkach 4.0 Międzynarodowe