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Modelling Energy Loss Mechanisms and a Determination of the Electron Energy Scale for the CDF Run II W Mass Measurement

Riddick, TC; (2012) Modelling Energy Loss Mechanisms and a Determination of the Electron Energy Scale for the CDF Run II W Mass Measurement. Doctoral thesis , UCL (University College London). Green open access

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Abstract

The calibration of the calorimeter energy scale is vital to measuring the mass of the W boson at CDF Run II. For the second measurement of the W boson mass at CDF Run II, two independent simulations were developed. This thesis presents a detailed description of the modification and validation of Bremsstrahlung and pair production modelling in one of these simulations, UCL Fast Simulation, comparing to both GEANT4 and real data where appropriate. The total systematic uncertainty on the measurement of the W boson mass in the W \rightarrow ev_{e} channel from residual inaccuracies in Bremsstrahlung modelling is estimated as 6.2 \pm 3.2 MeV/c ^{2} and the total systematic uncertainty from residual inaccuracies in pair production modelling is estimated as 2.8 \pm 2.7 MeV/ c^{2}. Two independent methods are used to calibrate the calorimeter energy scale in UCL Fast Simulation; the results of these two methods are compared to produce a measurement of the Z boson mass as a cross-check on the accuracy of the simulation.

Type: Thesis (Doctoral)
Title: Modelling Energy Loss Mechanisms and a Determination of the Electron Energy Scale for the CDF Run II W Mass Measurement
Open access status: An open access version is available from UCL Discovery
Language: English
Additional information: Third party copyright material has been removed from ethesis.
UCL classification: UCL > School of BEAMS
UCL > School of BEAMS > Faculty of Maths and Physical Sciences
URI: http://discovery.ucl.ac.uk/id/eprint/1349273
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