Irreducible QCD Backgrounds to Top Searches in Semi-Leptonic Final States at the Next Linear Collider

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Persistent URL	http://purl.org/net/epubs/work/29606
Record Status	Checked
Record Id	29606
Title	Irreducible QCD Backgrounds to Top Searches in Semi-Leptonic Final States at the Next Linear Collider
Contributors	S Moretti
Abstract	At future electron-positron colliders, one of the largest irreducible backgrounds to top searches in the channel `4 jets + lepton + missing energy' comes from QCD events of order alpha(2)(s). We compute here such processes exactly at the parton level by resorting to 2-->6 matrix elements exploiting helicity amplitude techniques. We adopt a typical selection procedure based on the tagging of a high momentum and separated lepton. We finally outline kinematic differences between signal and background events that can be exploited to further reduce such a QCD noise.
Organisation	CCLRC
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Language	English (EN)

Type	Details	URI(s)	Local file(s)	Year
Report	RAL Technical Reports RAL-TR-1999-001. 1999.		raltr-1999001.pdf	1999