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Abstract: We present a measurement of the mass difference between t and tbar quarksobserved in lepton+jets final states of ttbar events in 1 fb-1 of datacollected with the D0 detector at the Fermilab Tevatron Collider in ppbarcollisions at sqrts=1.96 TeV. The observed mass difference of 3.8+-3.7 GeV isconsistent with the equality of t and tbar masses. This is the first directmeasurement of a mass difference between a quark and its antiquark partner.



Autor: D0 Collaboration: V. Abazov, et al

Fuente: https://arxiv.org/







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