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Direct Measurement of the Mass Difference between Top and Antitop Quarks
Baringer, Philip S. Bean, Alice Clutter, Justace Randall McGivern, Carrie Lynne Moulik, Tania Wilson, Graham Wallace Abazov, V. M. Abbott, B. Abolins, M. Acharya, B. S.
Baringer, Philip S.
Bean, Alice
Clutter, Justace Randall
McGivern, Carrie Lynne
Moulik, Tania
Wilson, Graham Wallace
Abazov, V. M.
Abbott, B.
Abolins, M.
Acharya, B. S.
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Abstract
We present a measurement of the mass difference between t and t-bar quarks in lepton+jets final states of tt-bar events in 1 fb(−1) of data collected with the D0 detector from Fermilab Tevatron Collider pp-bar collisions at s√=1.96 TeV. The measured mass difference of 3.8±3.7 GeV is consistent with the equality of t and t-bar masses. This is the first direct measurement of a mass difference between a quark and its antiquark partner.
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This is the publisher's version, also available electronically from http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.103.132001.
Date
2009-09-21
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American Physical Society
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V. M. Abazov et al. (D0 Collaboration). (2009). "Direct Measurement of the Mass Difference between Top and Antitop Quarks." Physical Review Letters, 103(13):132001. http://dx.doi.org/10.1103/PhysRevLett.103.132001