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We assess the possibility of measuring the trilinear self-coupling of theStandard Model Higgs boson at future electron-positron linear colliders withcentre-of-mass energies between 500 and 1500 GeV. We consider rather lightHiggs scalars, with mass below the W+W- threshold, produced in the doubleHiggs-strahlung channel e+e- -> HHZ and decaying via the dominant mode H ->bbbar. Assuming ideal vertex tagging of the heavy-quark jets and massreconstruction of the Z boson produced in association with the Higgs pair, wecompare the yield of the above process to those of all irreducible electroweakand strong backgrounds proceeding through a bbbar bbbar Z intermediate state.Total cross sections and differential spectra of phenomenological relevance tothe selection and analysis of the signal are given and discussed.Comment: 25 pages, 11 figure

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