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Direct measurement of the mass difference between top and antitop quarks | | D0 Collaboration
; V. Abazov
; | | Date: |
10 Jun 2011 | | Abstract: | We present a direct measurement of the mass difference between top and
antitop quarks (dm) in lepton+jets top-antitop final states using the "matrix
element" method. The purity of the lepton+jets sample is enhanced for
top-antitop events by identifying at least one of the jet as originating from a
b quark. The analyzed data correspond to 3.6 fb-1 of proton-antiproton
collisions at 1.96 TeV acquired by D0 in Run II of the Fermilab Tevatron
Collider. The combination of the e+jets and mu+jets channels yields dm = 0.8
+/- 1.8 (stat) +/- 0.5 (syst) GeV, which is in agreement with the standard
model expectation of no mass difference. | | Source: | arXiv, 1106.2063 | | Other source: | [GID 1371662] 0906.1172 | | Services: | Forum | Review | PDF | Favorites | |
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