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Direct Measurement of the Mass Difference between Top and Antitop Quarks
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2009 (English)In: Physical Review Letters, ISSN 0031-9007, Vol. 103, no 13, 132001- p.Article in journal (Refereed) Published
Abstract [en]

We present a measurement of the mass difference between t and (t) over bar quarks in lepton + jets final states of t (t) over bar events in 1 fb(-1) of data collected with the D0 detector from Fermilab Tevatron Collider p (p) over bar collisions at root s = 1.96 TeV. The measured mass difference of 3.8 +/- 3.7 GeV is consistent with the equality of t and (t) over bar masses. This is the first direct measurement of a mass difference between a quark and its antiquark partner.

Place, publisher, year, edition, pages
2009. Vol. 103, no 13, 132001- p.
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Physical Sciences
URN: urn:nbn:se:uu:diva-127489DOI: 10.1103/PhysRevLett.103.132001ISI: 000270241100011OAI: oai:DiVA.org:uu-127489DiVA: diva2:330366
Available from: 2010-07-15 Created: 2010-07-13 Last updated: 2011-01-03Bibliographically approved

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Uppsala UniversityDepartment of Physics and Astronomy
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