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One Universal Extra Dimension in Pythia

Abstract : The Universal Extra Dimensions model has been implemented in the Pythia generator from version 6.4.18 onwards, in its minimal formulation with one inverse-TeV-sized extra dimension. The additional possibility of gravity-mediated decays, through a variable number of inverse-eV-sized extra dimensions into which only gravity extends, is also available. The implementation covers the lowest-lying Kaluza-Klein (KK) excitations of Standard Model particles, except for the excitations of the Higgs fields, with the mass spectrum calculated at one loop. 2 -> 2 tree-level production cross sections and KK number conserving 2-body decays are included. Mixing between iso-doublet and -singlet KK excitations is neglected thus far, and is expected to be negligible for all but the top sector.
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Contributor : Claudine Bombar <>
Submitted on : Friday, January 15, 2010 - 10:32:57 AM
Last modification on : Friday, November 6, 2020 - 3:31:26 AM

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M. Elkacimi, D. Goujdami, H. Przysiezniak, P. Skands. One Universal Extra Dimension in Pythia. Computer Physics Communications, Elsevier, 2009, 181, pp.122-127. ⟨10.1016/j.cpc.2009.08.008⟩. ⟨in2p3-00447483⟩



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