Electron identification efficiency in $B_{(s)}^0rightarrow e^{pm}mu^{mp}$

Kappert, R. (2016) Electron identification efficiency in $B_{(s)}^0rightarrow e^{pm}mu^{mp}$. Master's Thesis / Essay, Physics.

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Abstract

The Standard Model describes all fundamental particles we know of, together with three of the four fundamental forces. Despite large successes the model has shortcomings. There are many New Physics models, like Seesaw and supersymmetry, trying to explain these. The experimental search for New Physics is an active field as well, among these the search for charged Lepton Flavor Violating decays is a viable approach. The decay $B_{(s)}^0rightarrow e^{pm}mu^{mp}$ is such a decay and is studied by the LHCb collaboration. One of the efficiencies that needs to be known in the analysis is the efficiency of the identification of electrons (PIDe). A new method is developed to extract the efficiency without knowing the shape of the signal, resulting in an efficiency of $0.9229 pm 0.0018$ for the LHCb data of 2011 and 2012. Further the traditional method, that makes use of Crystal Ball functions, is evaluated and compared to the new method.

Item Type:	Thesis (Master's Thesis / Essay)
Degree programme:	Physics
Thesis type:	Master's Thesis / Essay
Language:	English
Date Deposited:	15 Feb 2018 08:25
Last Modified:	15 Feb 2018 08:25
URI:	https://fse.studenttheses.ub.rug.nl/id/eprint/14591

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