Forward-backward asymmetry in top quark-antiquark production
By V. Abazov, B. Abbott, B. Acharya, M. Adams, T. Adams, G. Alexeev, G. Alkhazov, A. Alton, G. Alverson, G. Alves and 410 more. 2011
262 citations recorded by the source corpus.
We present a measurement of forward-backward asymmetry in top quark-antiquark production in proton-antiproton collisions in the final state containing a lepton and at least four jets. Using a dataset corresponding to an integrated luminosity of $5.4\,\mathrm {fb}^{-1}$, collected by the \DZ\ experiment at the Fermilab Tevatron Collider, we measure the \ttbar\ forward-backward asymmetry to be $(9.2 \pm 3.7)$% at the reconstruction level. When corrected for detector acceptance and resolution, the asymmetry is found to be $(19.6 \pm 6.5)$%. We also measure a corrected asymmetry based on the lepton from a top quark decay, found to be $(15.2 \pm 4.0)$%. The results are compared to predictions based on the next-to-leading-order QCD generator {\sc mc@nlo}. The sensitivity of the measured and predicted asymmetries to the modeling of gluon radiation is discussed.
Subfields: Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/2811cdf8f2a6aae2231d3767a38058f0237e4c29
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Citations in the corpus
- NLO QCD corrections to off-shell top-antitop production with leptonic decays at hadron colliders (2012, methodology): “The D0 experiment has measured [100] A t,CM = 0.”
- Search for resonant t t-bar production in lepton+jets events in pp collisions at sqrt(s)=7 TeV (2012, background): “Recent models [14–18] aimed at explaining the tt charge asymmetry observed at the Tevatron [19–22] predict resonances in the 0.7–3 TeV mass range with production cross sections of the order of a few pb and add renewed interest to the sub-TeV mass region.”