Publicação: Measurement of color flow in tt̄ events from pp̄ collisions at √s=1.96TeV
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We present the first measurement of the color representation of the hadronically decaying W boson in tt̄ events, from 5.3fb-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. © 2011 American Physical Society.
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Physical Review D - Particles, Fields, Gravitation and Cosmology, v. 83, n. 9, 2011.
