Forward-backward asymmetry in top quark-antiquark production

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dc.date.accessioned2013-09-30T19:01:06Z
dc.date.accessioned2014-05-20T14:13:11Z
dc.date.accessioned2022-10-05T15:08:52Z
dc.date.available2013-09-30T19:01:06Z
dc.date.available2014-05-20T14:13:11Z
dc.date.available2022-10-05T15:08:52Z
dc.date.created2013-09-30T19:01:06Z
dc.date.created2014-05-20T14:13:11Z
dc.date.issued2011-12-12
dc.identifierPhysical Review D. College Pk: Amer Physical Soc, v. 84, n. 11, p. 13, 2011.
dc.identifier1550-7998
dc.identifierhttp://hdl.handle.net/11449/24606
dc.identifier10.1103/PhysRevD.84.112005
dc.identifierWOS:000297937500001
dc.identifierWOS000297937500001.pdf
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/3897796
dc.description.abstractWe 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 data set corresponding to an integrated luminosity of 5.4 fb(-1), collected by the D0 experiment at the Fermilab Tevatron Collider, we measure the t (t) over bar forward-backward asymmetry to be (9.2 +/- 3.7)% at the reconstruction level. When corrected for detector acceptance and resolution, the asymmetry is found to be (19.6 +/- 6.5)%. We also measure a corrected asymmetry based on the lepton from a top quark decay, found to be (15.2 +/- 4.0)%. The results are compared to predictions based on the next-to-leading-order QCD generator MC@NLO. The sensitivity of the measured and predicted asymmetries to the modeling of gluon radiation is discussed.
dc.languageeng
dc.publisherAmer Physical Soc
dc.relationPhysical Review D
dc.rightsAcesso restrito
dc.sourceWeb of Science
dc.titleForward-backward asymmetry in top quark-antiquark production
dc.typeArtigo


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