Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2002-12-30
Eur.Phys.J. C32 (2004) 209-219
Physics
High Energy Physics
High Energy Physics - Phenomenology
25 pages, 9 figures Version 2: Minor changes made as requested by Atlas referee and Springer editor. Added a chapter where bac
Scientific paper
10.1140/epjc/s2003-01392-0
A possibility to prove spin and CP-eigenvalue of a Standard Model (SM) Higgs boson is presented. We exploit angular correlations in the subsequent decay H -> ZZ -> 4l (muons or electrons) for Higgs masses above 200 GeV. We compare the angular distributions of the leptons originating from the SM Higgs with those resulting from decays of hypothetical particles with differing quantum numbers. We restrict our analysis to the use of the Atlas-detector which is one of two multi-purpose detectors at the upcoming 14 TeV proton-proton-collider (LHC) at CERN. By applying a fast simulation of the Atlas detector it can be shown that these correlations will be measured sufficiently well that consistency with the spin-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.
Buszello C. P.
der Bij J. van J.
Fleck I.
Marquard Peter
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