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arXiv 0811.3678hep-ph
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Little Randall-Sundrum模特:K-K再次罢工

Little Randall-Sundrum models: epsilon_K strikes again

M. Bauer, S. Casagrande, L. Gruender, U. Haisch, M. Neubert

摘要:

本文对“小Randall-Sundrum”模型中的中性K介子混合作了详细的唯象分析。它表明,所产生的约束,从CP-违反量的K_K可以,取决于紫外线截止值,甚至比原来的兰德尔Sundrum方案解决的层次问题的普朗克尺度。解释了增强的起源,并导出了一个大于几个10^3 TeV的界限Lambda_{UV},低于这个界限,通常不可避免地要对K_K进行大量修正。非标准的Z->bb耦合的影响进行了简要讨论。

英文摘要:

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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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