On Unparticles and K+ to pi+ Missing Energy

Abstract

We analyze the branching ratio and spectrum for the decay mode $K^{+}\to {\pi }^{+}+/E$(missing energy) in the unparticle model, where an unparticle can also serve as the missing energy. A vector unparticle can even mediate the $K^{+}\to {\pi }^{+}+\nu \bar{\nu }$, resulting complicated interference with the Standard Model.

13 pages, 10 figures

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