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| Authors | V.M. Abazov, . et al, L.S. Ancu, S.J. de Jong, F. Filthaut, C.F. Galea, J.G. Hegeman, P. Houben, M.M. Meijer, P. Svoisky, P.J. van den Berg, W.M. van Leeuwen | | Title | Direct measurement of the mass difference between top and antitop quarks |
| Journal | Physical Review Letters |
| Volume | 103 |
| Year | 2009 |
| Issue | 13 |
| Pages | 132001- |
| ISSN | 00319007 |
| Faculty | Faculty of Science |
| Institute/dept. | FNWI: Institute for High Energy Physics (IHEF) |
| Abstract | We present a measurement of the mass difference between t and (t) over bar quarks in lepton + jets final states of t (t) over bar events in 1 fb(-1) of data collected with the D0 detector from Fermilab Tevatron Collider p (p) over bar collisions at root s = 1.96 TeV. The measured mass difference of 3.8 +/- 3.7 GeV is consistent with the equality of t and (t) over bar masses. This is the first direct measurement of a mass difference between a quark and its antiquark partner. |
| Document type | Article |
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