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Measurement of color flow in t-tbar events from p-pbar collisions at sqrt(s)=1.96 TeV

Research output: Contribution to journalJournal article


Article number092002
Journal publication date10/05/2011
JournalPhysical Review D
Number of pages7
Original languageEnglish


We present the first measurement of the color representation of the hadronically decaying W boson in t-tbar events, from 5.3 fb^-1 of integrated luminosity collected with the D0 experiment. A novel calorimeter-based vectorial variable, "jet pull," is used, sensitive to the color-flow structure of the final state. We find that the fraction of uncolored W bosons is 0.56 +- 0.42(stat+syst), in agreement with the standard model.

Bibliographic note

© 2011 American Physical Society Submitted to Phys. Rev. Lett