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

2003/10/17 by Malgorzata Worek
Physics and Astronomy · #hep-ph

paper · pdf

published as Acta Phys.Polon. B34 (2003) 5531-5538 · 9 pages, 4 figure, Presented at the XXVII International Conference of Theoretical Physics, Matter To The Deepest, Ustron, Poland, 15-21 September 2003

arxiv created 2003/10/17 · arxiv updated 2009/12/01

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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