Analysis of the Hb(b)over-bar coupling constant and CP-violation effects at the future e(+)e(-) collider
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Data
2003-01-01
Autores
Braguta, V
Chalov, A.
Likhoded, A.
Rosenfeld, Rogério [UNESP]
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American Institute of Physics (AIP)
Resumo
The e(+)e(-)-->b (B) over bar nu(ν) over bar process, where nu is an electron, muon, or tau-lepton neutrino, is analyzed in detail for the general form of the coupling constant of a Higgs boson with b quarks, with the (m(b)/v)(a + igamma(5)b) parameterization of the Hb (b) over bar interaction. This process is shown to be highly sensitive to this coupling constant. Experiments at the future with roots = 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(-)-->b (b) over bar nu(ν) over bar process in combination with the independent measurements of the partial width Gamma(H --> b (b) over bar) can testify to the CP origin of the Higgs sector of the theory. (C) 2003 MAIK Nauka/Interperiodica.
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Jetp Letters. Melville: Amer Inst Physics, v. 78, n. 1, p. 1-4, 2003.