Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2003-05-08
JHEP 0308 (2003) 034
Physics
High Energy Physics
High Energy Physics - Phenomenology
20 pages, 11 figures, LaTex, minor revisions
Scientific paper
10.1088/1126-6708/2003/08/034
We study the effects of including brane localized curvature terms in the Randall-Sundrum (RS) model of the hierarchy. This leads to the existence of brane localized kinetic terms for the graviton. Such terms can be induced by brane and bulk quantum effects as well as Higgs-curvature mixing on the brane. We derive the modified spectrum of Kaluza-Klein (KK) gravitons and their couplings to 4-dimensional fields in the presence of these terms. We find that the masses and couplings of the KK gravitons have considerable dependence on the size of the brane localized terms; the weak-scale phenomenology of the model is consequently modified . In particular, the weak-scale spin-2 graviton resonances which generically appear in the RS model may be significantly lighter than previously assumed. However, they may avoid detection as their widths may be too narrow to be observable at colliders. In the contact interaction limit, for a certain range of parameters, the experimental reach for the scale of the theory is independent of the size of the boundary terms.
Davoudiasl Hooman
Hewett JoAnne L.
Rizzo Thomas G.
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