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

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 fb1. 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 ðstatÞ 0:75 ðsystÞ 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.

Authorship: Aaltonen T., Abazov V.M., Abbott B., Acharya B.S., Adams M., Adams T., Alexeev G.D., Alkhazov G., Alton A., Alvarez González B., Alverson G., Amerio S., Amidei D., Anastassov A., Annovi A., Antos J., Apollinari G., Appel J.A., Arisawa T., Artikov A., Asaadi J., Ashmanskas W., Askew A., Atkins S., Auerbach B., Augsten K., Aurisano A., Avila C., Azfar F., Badaud F., Badgett W., Bae T., Bagby L., Baldin B., Bandurin D.V., Banerje

Fuente: Physical Review D - Particles, Fields, Gravitation and Cosmology, 2012, 86(9), 092003

Publisher: American Physical Society

Publication date: 01/11/2012

No. of pages: 31

Publication type: Article

DOI: 10.1103/PhysRevD.86.092003

ISSN: 1550-7998,1550-2368,2470-0010,2470-0029

Publication Url: https://doi.org/10.1103/PhysRevD.86.092003

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