Direct measurement of the mass difference between top and antitop quarks

Abazov, V. M.

doi:10.1103/PhysRevLett.103.132001

Title: Direct measurement of the mass difference between top and antitop quarks

Journal Article · Mon Jun 01 00:00:00 EDT 2009 · Phys.Rev.Lett.

DOI:https://doi.org/10.1103/PhysRevLett.103.132001· OSTI ID:1861361

Abazov, V. M.

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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Research Organization:: Brookhaven National Laboratory (BNL), Upton, NY (United States); Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)

Sponsoring Organization:: USDOE Office of Science (SC), High Energy Physics (HEP)

Contributing Organization:: D0

DOE Contract Number:: AC02-07CH11359

OSTI ID:: 1861361

Report Number(s):: FERMILAB-PUB-09-285-E; arXiv:0906.1172; oai:inspirehep.net:822373

Journal Information:: Phys.Rev.Lett., Vol. 103

Country of Publication:: United States

Language:: English

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