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Measurement of the Forward-Backward Charge Asymmetry in Top-Quark Pair Production
Baringer, Philip S. Bean, Alice Hensel, Carsten Moulik, Tania Abazov, V. M. Abbott, B. Abolins, M. Acharya, B. S. Adams, M.
Baringer, Philip S.
Bean, Alice
Hensel, Carsten
Moulik, Tania
Abazov, V. M.
Abbott, B.
Abolins, M.
Acharya, B. S.
Adams, M.
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Abstract
We present the first measurement of the integrated forward-backward charge asymmetry in top-quark–top-antiquark pair (tt-bar) production in proton-antiproton (pp-bar) collisions in the lepton+jets final state. Using a b-jet tagging algorithm and kinematic reconstruction assuming tt-bar+X production and decay, a sample of 0.9 fb(−1) 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-bar+X production via a Z′ resonance.
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This is the publisher's version, also available electronically from http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.100.142002.
Date
2008-04-09
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American Physical Society
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V. M. Abazov et al. (D0 Collaboration). (2008). "Measurement of the Forward-Backward Charge Asymmetry in Top-Quark Pair Production." Physical Review Letters, 100(14):142002. http://dx.doi.org/10.1103/PhysRevLett.100.142002