Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2002-12-19
Phys.Rev.D68:045002,2003
Physics
High Energy Physics
High Energy Physics - Phenomenology
24 pages, 8 figures, LaTex. Discussion and figure added addressing the effects of this analysis on the hierarchy
Scientific paper
10.1103/PhysRevD.68.045002
We examine the effects of boundary kinetic terms in the Randall-Sundrum model with gauge fields in the bulk. We derive the resulting gauge Kaluza-Klein (KK) state wavefunctions and their corresponding masses, as well as the KK gauge field couplings to boundary fermions, and find that they are modified in the presence of the boundary terms. In particular, for natural choices of the parameters, these fermionic couplings can be substantially suppressed compared to those in the conventional Randall-Sundrum scenario. This results in a significant relaxation of the bound on the lightest gauge KK mass obtained from precision electroweak data; we demonstrate that this bound can be as low as a few hundred GeV. Due to the relationship between the lightest gauge KK state and the electroweak scale in this model, this weakened constraint allows for the electroweak scale to be near a TeV in this minimal extension of the Randall-Sundrum model with bulk gauge fields, as opposed to the conventional scenario.
Davoudiasl Hooman
Hewett JoAnne L.
Rizzo Thomas G.
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