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A possibility to prove spin and CP-eigenvalue of a Standard Model (SM) Higgsboson is presented. We exploit angular correlations in the subsequent decay H-> ZZ -> 4l (muons or electrons) for Higgs masses above 200 GeV. We compare theangular distributions of the leptons originating from the SM Higgs with thoseresulting from decays of hypothetical particles with differing quantum numbers.We restrict our analysis to the use of the Atlas-detector which is one of twomulti-purpose detectors at the upcoming 14 TeV proton-proton-collider (LHC) atCERN. By applying a fast simulation of the Atlas detector it can be shown thatthese correlations will be measured sufficiently well that consistency with thespin-CP hypothesis 0+ of the Standard Model can be verified and the 0- and 1+-can be ruled out with an integrated luminosity of 100 fb^-1.Comment: 25 pages, 9 figures Version 2: Minor changes made as requested by  Atlas referee and Springer editor. Added a chapter where background  subtraction is detaile

Prospective analysis of spin- and CP-sensitive variables in H $\rightarrow$ ZZ $\rightarrow$ l + 1l- 1l + 2l- 2 at the LHC