title: Future e(+)e(-) colliders' sensitivity to Hbb coupling and CP violation.
abstract: We perform a complete simulation of the process e(+)e(-)-->bbvv, where nu can be an electron, muon, or tau neutrino, in the context of a general Higgs coupling to b quarks. We parametrize the Hbb; coupling as (m(b)/v)(a+igamma(5)b). Taking into account interference effects between pure Higgs and Standard Model contributions, we find that sensitivities of the order of 2% and 20% can be obtained at a future e(+)e(-) collider for deviations of the a and b parameters, respectively, from their Standard Model values. Combining our analysis with an independent measurement of Gamma(H-->bb) can provide evidence about the CP nature of the Higgs sector.
authors.affiliation: Institute of High Energy Physics, Protvino, Moscow Region, Russia.
authors.forename: V
authors.initials: V
authors.lastname: Braguta
authors.forename: A
authors.initials: A
authors.lastname: Chalov
authors.forename: A
authors.initials: A
authors.lastname: Likhoded
authors.forename: R
authors.initials: R
authors.lastname: Rosenfeld