Type
Text
Type
Dissertation
Advisor
Chang, Edmund K.M. | John D. Hobbs | Derek Teaney | Martin Rocek | Heidi Schellman.
Date
2010-08-01
Keywords
electroweak, ratio method, Wmass | Physics, Elementary Particles and High Energy
Department
Department of Physics
Language
en_US
Source
This work is sponsored by the Stony Brook University Graduate School in compliance with the requirements for completion of degree.
Identifier
http://hdl.handle.net/11401/70876
Publisher
The Graduate School, Stony Brook University: Stony Brook, NY.
Format
application/pdf
Abstract
This dissertation describes an alternative method of measuring the W boson mass in Dzero experiment. Instead of extracting W mass from the fitting of fast Monte Carlo simulations to data as in the standard method, we make the direct fit of the transverse mass between W data and Z data. One of the two electrons from Z boson is treated as a neutrino in the calculation of transverse mass. In ratio method, the best fitted scale factor corresponds to the ratio of W and Z boson mass. Given the precisely measured Z boson mass, W mass is directly fitted from W and Z data. This dissertation demonstrates that ratio method is a plausible method of measuring the W boson mass. With the Dzero Run IIa data set, ratio method gives measured W mass as 80435+/-43(stat)+/-26(sys) MeV.
Recommended Citation
Guo, Feng, "Ratio Method of Measuring the W Boson Mass" (2010). Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions). 85.
https://commons.library.stonybrook.edu/stony-brook-theses-and-dissertations-collection/85