Calculation of Z plus four jet production at the Tevatron

V. Barger; E. Mirkes; R. J.N. Phillips; T. Stelzer

doi:10.1016/0370-2693(94)91388-9

Calculation of Z plus four jet production at the Tevatron

V. Barger, E. Mirkes, R. J.N. Phillips, T. Stelzer

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Abstract

We present the first calculation of Z + 4 jet production with heavy quark flavor identification at the Tevatron p p ̄ collider. The Z + 4 jet channel is especially interesting as a normalizer for the W + 4 jet background to top quark signals, as a background to a possible t → cZ flavor-changing neutral-current (FCNC) decay signal, and as a background to missing-p_T signals from gluino pairs. We also calculate the contributions to W + 4 jet production from all the different heavy-flavor final states. The MADGRAPH program is used to generate all leading order subprocess helicity amplitudes. We present Monte Carlo results with separation and acceptance criteria suitable for the Tevatron experimental analyses. The dependence of the cross sections on experimental cuts and the theoretical ambiguities due to the scale dependence are discussed. The predicted (W + 4 jet) (Z + 4 jet) ratio is insensitive to most of these choices.

Original language	English (US)
Pages (from-to)	336-340
Number of pages	5
Journal	Physics Letters B
Volume	338
Issue number	2-3
DOIs	https://doi.org/10.1016/0370-2693(94)91388-9
State	Published - Oct 27 1994
Externally published	Yes

ASJC Scopus subject areas

Nuclear and High Energy Physics

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10.1016/0370-2693(94)91388-9

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title = "Calculation of Z plus four jet production at the Tevatron",

abstract = "We present the first calculation of Z + 4 jet production with heavy quark flavor identification at the Tevatron p p{\= } collider. The Z + 4 jet channel is especially interesting as a normalizer for the W + 4 jet background to top quark signals, as a background to a possible t → cZ flavor-changing neutral-current (FCNC) decay signal, and as a background to missing-pT signals from gluino pairs. We also calculate the contributions to W + 4 jet production from all the different heavy-flavor final states. The MADGRAPH program is used to generate all leading order subprocess helicity amplitudes. We present Monte Carlo results with separation and acceptance criteria suitable for the Tevatron experimental analyses. The dependence of the cross sections on experimental cuts and the theoretical ambiguities due to the scale dependence are discussed. The predicted (W + 4 jet) (Z + 4 jet) ratio is insensitive to most of these choices.",

author = "V. Barger and E. Mirkes and Phillips, {R. J.N.} and T. Stelzer",

note = "Funding Information: in part by the University of Wisconsin Research Committee with funds granted by the Wisconsin Alumni Research Foundation. Funding Information: V.B. and R.J.N.P. thank Peter Landshoff and John Taylor for the hospitality of DAMTP, Cambridge, where some of this work was done. We thank C. Cam-pagnari for a helpful correspondence. This research was supported in part by the US Department of Energy under Contract No. DE-AC02-76ER00881 and",

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doi = "10.1016/0370-2693(94)91388-9",

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T1 - Calculation of Z plus four jet production at the Tevatron

AU - Barger, V.

AU - Mirkes, E.

AU - Phillips, R. J.N.

AU - Stelzer, T.

N1 - Funding Information: in part by the University of Wisconsin Research Committee with funds granted by the Wisconsin Alumni Research Foundation. Funding Information: V.B. and R.J.N.P. thank Peter Landshoff and John Taylor for the hospitality of DAMTP, Cambridge, where some of this work was done. We thank C. Cam-pagnari for a helpful correspondence. This research was supported in part by the US Department of Energy under Contract No. DE-AC02-76ER00881 and

PY - 1994/10/27

Y1 - 1994/10/27

N2 - We present the first calculation of Z + 4 jet production with heavy quark flavor identification at the Tevatron p p ̄ collider. The Z + 4 jet channel is especially interesting as a normalizer for the W + 4 jet background to top quark signals, as a background to a possible t → cZ flavor-changing neutral-current (FCNC) decay signal, and as a background to missing-pT signals from gluino pairs. We also calculate the contributions to W + 4 jet production from all the different heavy-flavor final states. The MADGRAPH program is used to generate all leading order subprocess helicity amplitudes. We present Monte Carlo results with separation and acceptance criteria suitable for the Tevatron experimental analyses. The dependence of the cross sections on experimental cuts and the theoretical ambiguities due to the scale dependence are discussed. The predicted (W + 4 jet) (Z + 4 jet) ratio is insensitive to most of these choices.

AB - We present the first calculation of Z + 4 jet production with heavy quark flavor identification at the Tevatron p p ̄ collider. The Z + 4 jet channel is especially interesting as a normalizer for the W + 4 jet background to top quark signals, as a background to a possible t → cZ flavor-changing neutral-current (FCNC) decay signal, and as a background to missing-pT signals from gluino pairs. We also calculate the contributions to W + 4 jet production from all the different heavy-flavor final states. The MADGRAPH program is used to generate all leading order subprocess helicity amplitudes. We present Monte Carlo results with separation and acceptance criteria suitable for the Tevatron experimental analyses. The dependence of the cross sections on experimental cuts and the theoretical ambiguities due to the scale dependence are discussed. The predicted (W + 4 jet) (Z + 4 jet) ratio is insensitive to most of these choices.

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Calculation of Z plus four jet production at the Tevatron

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