Little Randall-Sundrum models: epsilon_K strikes again

Details Little Randall-Sundrum models: epsilon_K strikes again Little Randall-Sundrum models: epsilon_K strikes again

2008-11-22

arxiv.org/abs/0811.3678v1

Phys.Rev.D79:076001,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

11 pages, 3 figures

Scientific paper

10.1103/PhysRevD.79.076001

A detailed phenomenological analysis of neutral kaon mixing in "little Randall-Sundrum" models is presented. It is shown that the constraints arising from the CP-violating quantity epsilon_K can, depending on the value of the ultra-violet cutoff, be even stronger than in the original Randall-Sundrum scenario addressing the hierarchy problem up to the Planck scale. The origin of the enhancement is explained, and a bound Lambda_{UV}>several 10^3 TeV is derived, below which vast corrections to epsilon_K are generically unavoidable. Implications for non-standard Z->bb couplings are briefly discussed.

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