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Developments for ATLAS online data processimg: quality access tools and B-Physics trigger algorithms for J/ψ→e+e-
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The work presented here results from a collaboration with two parts of the Trigger and Data Acquisition (TDAQ) project of the ATLAS experiment, at CERN, Switzerland. Firstly, in collaboration with the group responsible for selecting B-physics events at the Trigger system, I studied the possibility of triggering the channel B → J/ψ→e+e-. The variables used to select these events were investigated and a selection algorithm implemented to achieve the best efficiency whilst maintaining tolerable background rates. Secondly, a method for browsing monitoring histograms databases was developed. This application called NODE can be access histograms through a graphical user interface. It was developed within the framework of the TDAQ Monitoring Working Group.
The work presented here results from a collaboration with two parts of the Trigger and Data Acquisition (TDAQ) project of the ATLAS experiment, at CERN, Switzerland. Firstly, in collaboration with the group responsible for selecting B-physics events at the Trigger system, I studied the possibility of triggering the channel B → J/ψ→e+e-. The variables used to select these events were investigated and a selection algorithm implemented to achieve the best efficiency whilst maintaining tolerable background rates. Secondly, a method for browsing monitoring histograms databases was developed. This application called NODE can be access histograms through a graphical user interface. It was developed within the framework of the TDAQ Monitoring Working Group.
Descrição
Tese de mestrado em Física (Física Nuclear e Partículas), apresentada à Universidade de Lisboa, através da Faculdade de Ciências, 2008
Palavras-chave
Física nuclear Partículas