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Physical Review D 86 (2012) 092003
Combination of the top-quark mass measurements from the Tevatron collider
T. Aaltonen, M. C. Cousinou1, A. Duperrin1, W. Geng1, E. Kajfasz1, S. Kermiche1, E. Nagy1, N. Osman1, J.-F. Grivaz2, T. Guillemin2, M. Jaffré2, P. Pétroff2, H. Li3, G. Sajot3, J. Stark3, F. Badaud4, P. Gay4, P. Gris4, G. Grenier5, T. Kurca5, P. Lebrun5, P. Verdier5, A. Savoy-Navarro6
CDF, D0 Collaboration(s)

The top quark is the heaviest known elementary particle, with a mass about twice the mass of the $W$ and $Z$ bosons of the weak interaction, and 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, and the $W$ boson then decays to a lepton and a neutrino or to a quark-antiquark pair. Using top-antitop pairs at the Tevatron proton-antiproton collider, the CDF and {\dzero} collaborations have measured the top quark's mass in different decay channels for integrated luminosities of up to 5.8 fb$^{-1}$. 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 $173.18 \pm 0.56({\rm stat}) \pm 0.75({\rm syst})$ GeV or $173.18 \pm 0.94$ GeV, which has a precision of $\pm 0.54%$, making the mass of the top quark the most accurately measured mass of the standard model quarks.
1 :  CPPM - Centre de Physique des Particules de Marseille
2 :  LAL - Laboratoire de l'Accélérateur Linéaire
3 :  LPSC - Laboratoire de Physique Subatomique et de Cosmologie
4 :  LPC - Laboratoire de Physique Corpusculaire [Clermont-Ferrand]
5 :  IPNL - Institut de Physique Nucléaire de Lyon
6 :  APC - UMR 7164 - AstroParticule et Cosmologie
Physique/Physique des Hautes Energies - Expérience
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