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The standard model process \(e^ + e^ - \to \nu \bar \nu b\bar b\) and its Higgs signal at LEP II

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Zeitschrift für Physik C Particles and Fields

Abstract

We present and study the results for the standard model process \(e^ + e^ - \to \nu \bar \nu b\bar b\) at c.m. energies 150 ≤ √s(GeV) ≤ 240 and for Higgs boson masses 60 GeV ≤ m H ≤ 110 GeV, obtained from all tree-level diagrams and including the most important radiative corrections. The matrix elements have been calculated by the ‘spinor bracket’ method without neglecting masses, which is presented in detail. The √s-dependence and the interference properties of the Higgs boson contributions and of various coherent background contributions to the total cross section are examined and compared. The important differential distributions for the Higgs boson and the background components are studied, providing information useful for choosing cuts in Higgs searches. We also examine the effect of a minimal set of cuts and evaluate the importance of the WW fusion for detecting a higher mass Higgs boson at LEP II.

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Authors and Affiliations

  1. Department of Physics, University of Crete and Foundation of Research and Technology (FORTH) Heraklion, PO Box 1470, GR-71409, Iráklion, Greece

    D. Apostolakis & P. Ditsas

  2. Department of Physics, University of Athens, Panepistimioupolis, GR-15771, Athens, Greece

    S. Katsanevas

Authors
  1. D. Apostolakis
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  2. P. Ditsas
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  3. S. Katsanevas
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Apostolakis, D., Ditsas, P. & Katsanevas, S. The standard model process \(e^ + e^ - \to \nu \bar \nu b\bar b\) and its Higgs signal at LEP II. Z Phys C - Particles and Fields 76, 201–211 (1997). https://doi.org/10.1007/s002880050544

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  • DOI: https://doi.org/10.1007/s002880050544

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