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Higgs Phenomenology of Minimal Universal Extra Dimensions
G. Bélanger1, A. Belyaev, M. Brown2, M. Kakizaki3, A. Pukhov1, 4
(2012-01-26)

The minimal model of Universal Extra Dimensions (MUED) is briefly reviewed. We explain how the cross-sections for Higgs production via gluon fusion and decay into two photons are modified, relative the the Standard Model (SM) values, by KK particles running in loops, leading to an enhancement of the gg to h to two photons and gg to h to W+W- cross-sections. ATLAS and CMS searches for the SM Higgs in these channels are reinterpreted in the context of MUED and used to place new limits on the MUED parameter space. Only a small region of between 1 and 3 GeV around mh = 125 GeV for 500 GeV < 1/R < 1600 GeV remains open at the 95 % confidence level.
1:  LAPTH - Laboratoire d'Annecy-le-Vieux de Physique Théorique
2:  LPNHE - Laboratoire de Physique Nucléaire et de Hautes Énergies
3:  Department of Physics, University of Toyama
4:  Skobeltsyn Inst. of Nuclear Physics, Moscow State
Physics/High Energy Physics - Phenomenology
Fulltext link: 
http://fr.arXiv.org/abs/1201.5582