Little Randall-Sundrum models: epsilonK strikes again
Abstract
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 epsilonK 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 LambdaUV>several 103 TeV is derived, below which vast corrections to epsilonK are generically unavoidable. Implications for non-standard Z->bb couplings are briefly discussed.
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