Can the trilinear Higgs self-coupling be measured at future linear colliders?

Details Can the trilinear Higgs self-coupling be measured at future linear colliders? Can the trilinear Higgs self-coupling be measured at future linear colliders?

1999-06-16

arxiv.org/abs/hep-ph/9906395v1

Eur.Phys.J.C13:459-470,2000

Physics

High Energy Physics

High Energy Physics - Phenomenology

25 pages, 11 figures

Scientific paper

10.1007/s100520050709

We assess the possibility of measuring the trilinear self-coupling of the Standard Model Higgs boson at future electron-positron linear colliders with centre-of-mass energies between 500 and 1500 GeV. We consider rather light Higgs scalars, with mass below the W+W- threshold, produced in the double Higgs-strahlung channel e+e- -> HHZ and decaying via the dominant mode H -> bbbar. Assuming ideal vertex tagging of the heavy-quark jets and mass reconstruction of the Z boson produced in association with the Higgs pair, we compare the yield of the above process to those of all irreducible electroweak and strong backgrounds proceeding through a bbbar bbbar Z intermediate state. Total cross sections and differential spectra of phenomenological relevance to the selection and analysis of the signal are given and discussed.

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