B \to K(K^*) missing energy in Unparticle physics

Abstract

In the present work we study the effects of an unparticle $\unpart$ as the possible source of missing energy in the decay $B\to K(K^{\ast })+\mathrm{missingenergy}$. We find that the dependence of the differential branching ratio on the $K$($K^{\ast }$)-meson's energy in the presence of the vector unparticle operators is very distinctive from that of the SM. Moreover, in using the existing upper bound on $B\to K(K^{\ast })+\mathrm{missingenergy}$ decays, we have been able to put more stringent constraints on the parameters of unparticle stuff.

13 pages, 5 figures

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