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[Licence| Download | New Version Template] actu_v2_1.tar.gz(577 Kbytes)
Manuscript Title: One Universal Extra Dimension in PYTHIA
Authors: M. ElKacimi, D. Goujdami, H. Przysiezniak, P. Skands
Program title: PYTHIA Version number: 6.420
Catalogue identifier: ACTU_v2_1
Distribution format: tar.gz
Journal reference: Comput. Phys. Commun. 181(2010)122
Programming language: Fortran 77.
Computer: CERN lxplus and any other machine with a Fortran 77 compiler.
Operating system: Linux Red Hat.
RAM: about 800K words
Word size: 32 bits
Keywords: Elementary particle physics, Event simulation, Beyond Standard Model, Universal Extra Dimension.
PACS: 12.60-i, 4.50-h.
Classification: 11.2.

Does the new version supersede the previous version?: Yes

Nature of problem:
At high energy collisions between elementary particles, physics beyond the Standard Model is searched for. Many models are being investigated, namely extra dimensional models.

Solution method:
The Universal Extra Dimension model is implemented in the PYTHIA event generator.

Reasons for new version:
The Universal Extra Dimensions model has been implemented in the PYTHIA generator from version 6.4.18 onwards, in its minimal formulation with one TeV-1 sized extra dimension. The additional possibility of gravity-mediated decays, through a variable number of eV-1 sized extra dimensions into which only gravity extends, is also available. The implementation covers the lowest lying Kaluza-Klein (KK) excitations of StandardModel 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 unpolarized 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.

Running time:
10-1000 events per second, depending on the process studied.