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PDF and QCD eects in the precision measurement of the W boson mass at CDF

Beecher, D.P.; (2011) PDF and QCD eects in the precision measurement of the W boson mass at CDF. Doctoral thesis , UCL (University College London). Green open access

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Abstract

A sample of W \rightarrow ev (W \rightarrow \mu v) and Z^0 \rightarrow e^+e^- (Z^0 \rightarrow \mu^+\mu^-) events recorded by the CDF detector for pp- collisions at \sqrt(s-hat) = 1:96 TeV with a total integrated luminosity of 2.3 fb^-1 are used to evaluate the systematic uncertainty in the determination of the W boson mass arising from uncertainties in the parton distribution functions and higher-order QCD effects. The systematic contribution of PDFs is determined to be 10 MeV for MSTW2008 NLO and 12 MeV for CTEQ6.6. The total systematic contribution arising from higher-order QCD eects in 9 MeV. The unfolded Z0 transverse momentum distribution is presented, and estimates of parameters in a phenomenological model describing low transverse momentum Z^0 events are extracted.

Type: Thesis (Doctoral)
Title: PDF and QCD eects in the precision measurement of the W boson mass at CDF
Open access status: An open access version is available from UCL Discovery
Language: English
Additional information: The abstract contains LaTeX text. Please see the attached pdf for rendered equations
UCL classification: UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy
URI: https://discovery.ucl.ac.uk/id/eprint/1310142
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