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Combination of the top-quark mass measurements from the Tevatron collider
- Aaltonen, T. (author)
-
- Buszello, Claus P. (author)
- Uppsala universitet,Högenergifysik
- Zucchelli, S. (author)
- (creator_code:org_t)
- 2012
- 2012
- English.
- In: Physical Review D. - 1550-7998 .- 1550-2368. ; 86:9, s. 092003-
- Journal article (peer-reviewed)
Abstract
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- The top quark is the heaviest known elementary particle, with a mass about 40 times larger than the mass of its isospin partner, the bottom quark. It decays almost 100% of the time to a W boson and a bottom quark. Using top-antitop pairs at the Tevatron proton-antiproton collider, the CDF and D0 Collaborations have measured the top quark's mass in different final states for integrated luminosities of up to 5.8fb -1. This paper reports on a combination of these measurements that results in a more precise value of the mass than any individual decay channel can provide. It describes the treatment of the systematic uncertainties and their correlations. The mass value determined is 173.18±0.56(stat)±0.75(syst)GeV or 173.18±0.94GeV, which has a precision of ±0.54%, making this the most precise determination of the top-quark mass.
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