Large Extra Dimensions in Rare Decays

Abstract

The prospect of experimental verification of the large extra dimension scenario in rare decays is discussed. The case of J/\Psi and \Upsilon to photon + missing energy is calculated in detail, and it is shown that the limit on the compactification scale M_S lies at present in the ten GeV range. In contrast to the quarkonium systems, signals in Kaon and Pion decays will be small.

Comments: 11 pages, 3 figures, LaTeX, minor stylistic changes, version to be published in JHEP