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

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

2003-10-17

arxiv.org/abs/hep-ph/0310205v1

Acta Phys.Polon. B34 (2003) 5531-5538

Physics

High Energy Physics

High Energy Physics - Phenomenology

9 pages, 4 figure, Presented at the XXVII International Conference of Theoretical Physics, Matter To The Deepest, Ustron, Pola

Scientific paper

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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