Direct measurement of the mass difference between top and antitop quarks

Details Direct measurement of the mass difference between top and antitop quarks Direct measurement of the mass difference between top and antitop quarks

2009-06-05

arxiv.org/abs/0906.1172v3

Phys.Rev.Lett.103:132001,2009

Physics

High Energy Physics

High Energy Physics - Experiment

submitted to Phys. Rev. Letters

Scientific paper

10.1103/PhysRevLett.103.132001

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

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