Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1999-05-27
Phys.Rev. D61 (2000) 036007
Physics
High Energy Physics
High Energy Physics - Phenomenology
References added, RevTex, 9 pages with two figures
Scientific paper
10.1103/PhysRevD.61.036007
We study the unitarity constraint on the two body Higgs boson elastic scattering in the presence of extra dimensions. The contributions from exchange of spin-2 and spin-0 Kaluza-Klein states can have large effect on the partial wave amplitude. Unitarity condition restrict the maximal allowed value for the ratio $r$ of the center of mass energy to the gravity scale to be less than one. Although the constraint on the standard Higgs boson mass for $r$ of order one is considerably relaxed, for small $r$ the constraint is similar to that in the Standard Model. The resulting bound on the Higgs boson mass is not dramatically altered if perturbative calculations are required to be valid up to the maximal allowed value for $r$.
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