Measurement of the Forward-Backward Charge Asymmetry in Top-Quark Pair Production

V. M. Abazov et al. (D0 Collaboration)
Phys. Rev. Lett. 100, 142002 – Published 9 April 2008
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Abstract

We present the first measurement of the integrated forward-backward charge asymmetry in top-quark–top-antiquark pair (tt¯) production in proton-antiproton (pp¯) collisions in the lepton+jets final state. Using a b-jet tagging algorithm and kinematic reconstruction assuming tt¯+X production and decay, a sample of 0.9fb1 of data, collected by the D0 experiment at the Fermilab Tevatron Collider, is used to measure the asymmetry for different jet multiplicities. The result is also used to set upper limits on tt¯+X production via a Z resonance.

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  • Received 7 December 2007

DOI:https://doi.org/10.1103/PhysRevLett.100.142002

©2008 American Physical Society

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Vol. 100, Iss. 14 — 11 April 2008

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