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. 2008 Apr 11;100(14):142002.
doi: 10.1103/PhysRevLett.100.142002. Epub 2008 Apr 9.

Measurement of the forward-backward charge asymmetry in top-quark pair production

V M Abazov  1 B AbbottM AbolinsB S AcharyaM AdamsT AdamsE AguiloS H AhnM AhsanG D AlexeevG AlkhazovA AltonG AlversonG A AlvesM AnastasoaieL S AncuT AndeenS AndersonB AndrieuM S AnzelcY ArnoudM ArovM ArthaudA AskewB AsmanA C S Assis JesusO AtramentovC AutermannC AvilaC AyF BadaudA BadenL BagbyB BaldinD V BandurinS BanerjeeP BanerjeeE BarberisA-F BarfussP BargassaP BaringerJ BarretoJ F BartlettU BasslerD BauerS BealeA BeanM BegalliM BegelC Belanger-ChampagneL BellantoniA BellavanceJ A BenitezS B BeriG BernardiR BernhardI BertramM BesançonR BeuselinckV A BezzubovP C BhatV BhatnagarC BiscaratG BlazeyF BlekmanS BlessingD BlochK BloomA BoehnleinD BolineT A BoltonG BorissovT BoseA BrandtR BrockG BrooijmansA BrossD BrownN J BuchananD BuchholzM BuehlerV BuescherV BunichevS BurdinS BurkeT H BurnettC P BuszelloJ M ButlerP CalfayanS CalvetJ CamminW CarvalhoB C K CaseyN M CasonH Castilla-ValdezS ChakrabartiD ChakrabortyK M ChanK ChanA ChandraF CharlesE CheuF ChevallierD K ChoS ChoiB ChoudharyL 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ZatserklyaniyC ZeitnitzT ZhaoB ZhouJ ZhuM ZielinskiD ZieminskaA ZieminskiL ZivkovicV ZutshiE G ZverevD0 Collaboration
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Free article

Measurement of the forward-backward charge asymmetry in top-quark pair production

V M Abazov et al. Phys Rev Lett. .
Free article

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 0.9 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+X production via a Z' resonance.

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