Measurement of the W and top mass at the Tevatron: Results and perspectives Page: 1 of 3
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Fermilab FERMILAB-Conf-01/095-E CDF & DO June 2001
MEASUREMENT OF THE W AND TOP
MASS AT THE TEVATRON:
RESULTS AND PERSPECTIVES
ANDREA CASTRO
FOR THE CDF AND DO COLLABORATIONS
University di Bologna
1 Introduction
The measurements of the mass of the W boson (Mw) and of the top quark (M) are
important for three reasons: (i) these masses represent fundamental parameters of the
Standard Model; (ii) they determine the coupling between the top quark and the Higgs
boson, the coupling being proportional to Mt/M&y; and (iii) radiative corrections relate
the masses of the W, top quark and the Higgs boson: an accurate measurement of Mw
and Mt would provide a constraint on the Higgs mass (MH).
We present here the measurements obtained by the CDF and DO collaborations
corresponding to the so-called Run I of data-taking (1992-95, ~ 100 pb1 each) at the
Tevatron (pp collisions, Vsf = 1.8 TeV). In addition we report on the improvements
expected for these measurements in the current run (so-called Run IIa) which, having
just started (March 2001), is expected to collect about 2 fb- by the year 2004.
2 The detectors: CDF and DO
CDF and DO are the detectors which collect pp collisions at the Tevatron. A complete
description of their Run I configuration can be found elsewhere[1, 2] and we summarize
here the most relevant upgrades for Run II.
CDF has now a new tracking system with an upgraded silicon tracker (more coverage
and three-dimensional), a new drift chamber, and the capability for a secondary vertex
trigger. The forward parts of the calorimeters have been replaced while the muon system
underwent only a minor improvement. A significant upgrade has been necessary in the
trigger system to match the new run conditions.
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Castro, A. Measurement of the W and top mass at the Tevatron: Results and perspectives, article, June 11, 2001; Batavia, Illinois. (https://digital.library.unt.edu/ark:/67531/metadc719751/m1/1/: accessed April 25, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.