Abstract:We consider QED in five dimensions in a configuration where matter is localized on a 3-brane while foton propagates in the bulk. The idea is to investigate the effects of the Kaluza-Klein modes of the photon in the relativistic regime, but in low energy, and in the nonrelativistic regime. In the relativistic regime, we calculate the cross section for the reaction e + +e − → µ + +µ − . We compare our theoretical result with a precise measurement of this cross section at √ s = 57.77 GeV. As result, we extract a … Show more
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