Analysis of the \(Hb\bar b\) coupling constant and CP-violation effects at the future e+e collider

  • V. Braguta
  • A. Chalov
  • A. Likhoded
  • R. Rosenfeld
Fields, Particles, and Nuclei

DOI: 10.1134/1.1609565

Cite this article as:
Braguta, V., Chalov, A., Likhoded, A. et al. Jetp Lett. (2003) 78: 1. doi:10.1134/1.1609565

Abstract

The \(e^ + e^ - \to b\bar bv\bar v\) process, where υ is an electron, muon, or τ-lepton neutrino, is analyzed in detail for the general form of the coupling constant of a Higgs boson with b quarks, with the (mb/v)(a+Iγ5b) parameterization of the \(Hb\bar b\) interaction. This process is shown to be highly sensitive to this coupling constant. Experiments at the future with \(\sqrt s = 500 - GeV\) linear collider will provide limits of 2 and 20% for deviations of the parameters a and b, respectively, from their Standard Model values. Results concerning the \(e^ + e^ - \to b\bar bv\bar v\) process in combination with the independent measurements of the partial width \(\Gamma _{H \to b\bar b}\) can testify to the CP origin of the Higgs sector of the theory.

PACS numbers

13.66.Fg 11.30.Er 14.80.Cp 

Copyright information

© MAIK "Nauka/Interperiodica" 2003

Authors and Affiliations

  • V. Braguta
    • 1
  • A. Chalov
    • 1
  • A. Likhoded
    • 1
    • 2
  • R. Rosenfeld
    • 2
  1. 1.Institute for High Energy PhysicsProtvino, Moscow regionRussia
  2. 2.Instituto de Física TeóricaUNESPSão PauloBrasil

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