Jul 16 – 22, 2009
Kraków, Poland
Europe/Warsaw timezone

Direct Measurement of the Mass Difference Between Top and Antitop Quarks with the D0 Detector

Not scheduled
Auditorium Maximum (Kraków, Poland)

Auditorium Maximum

Kraków, Poland

The Auditorium Maximum of the Jagiellonian University 33 Krupnicza Street 31-123 Kraków
Poster session


Stefan Soldner-Rembold (University of Manchester)


We present a measurement of the difference between the masses of the top and antitop quarks in the lepton+jets final state. The analysis is based on the "matrix element" method. The purity of the data sample is enhanced by applying a neural-net-based b-tagging technique. The data for this measurement corresponds to 1 fb-1 of integrated luminosity acquired by the D0 experiment at the Fermilab Tevatron Collider. This represents the first direct measurement of a mass difference between a quark and its antiquark and represents a test of CPT invariance.

Primary authors

Aurelio Juste (Fermilab) Stefan Soldner-Rembold (University of Manchester)

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