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The method to determine the CP nature of Higgs bosons from decays to tau leptons at LC

Malgorzata Worek
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Abstract

We demonstrate how the transverse tau tau spin correlations can be used to determine whether a decaying Higgs boson is a mixed CP eigenstate, thereby directly probe the presence of CP violation in the neutral Higgs boson sector. We investigate the subsequent decay chain H --> tau+ tau- --> rho+ nu rho- nu --> pi+ pi0 nu pi- pi0 nu. The prospects for the measurement of the pseudoscalar admixture in the H-tau-tau coupling to a Standard Model Higgs boson with a mass of 120 GeV are quantified for the case of e+e- collisions at 350 GeV center-of-mass energy and 1 ab^{-1} integrated luminosity. The Standard Model Higgsstrahlung production process is used as an example.

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Malgorzata Worek. 2003-10-17. The method to determine the CP nature of Higgs bosons from decays to tau leptons at LC. https://arxiv.org/abs/hep-ph/0310205

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