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 5.8 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 +/- 0.56 (stat) +/- 0.75 (syst) GeV or 173.18 +/- 0.94 GeV, which has a precision of +/- 0.54%, making this the most precise determination of the top-quark mass.

T., A., V., A., B., A., B., A., M., A., T., A., et al. (2012). Combination of the top-quark mass measurements from the Tevatron collider. PHYSICAL REVIEW. D. PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 86(9) [10.1103/PhysRevD.86.092003].

Combination of the top-quark mass measurements from the Tevatron collider

BARRIA, PATRIZIA;GAROSI, PAOLA;MAESTRO, PAOLO;RUFFINI, FABRIZIO;SCRIBANO, ANGELO;SQUILLACIOTI, PAOLA;
2012-01-01

Abstract

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 5.8 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 +/- 0.56 (stat) +/- 0.75 (syst) GeV or 173.18 +/- 0.94 GeV, which has a precision of +/- 0.54%, making this the most precise determination of the top-quark mass.
T., A., V., A., B., A., B., A., M., A., T., A., et al. (2012). Combination of the top-quark mass measurements from the Tevatron collider. PHYSICAL REVIEW. D. PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 86(9) [10.1103/PhysRevD.86.092003].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11365/40599
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