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Higgs Phenomenology of Minimal Universal Extra Dimensions
Bélanger G., Belyaev A., Brown M., Kakizaki M., Pukhov A.
http://hal.archives-ouvertes.fr/hal-00665550
Physique/Physique des Hautes Energies - Phénoménologie
Higgs Phenomenology of Minimal Universal Extra Dimensions
G. Bélanger1, A. Belyaev, M. Brown2, M. Kakizaki3, A. Pukhov1, 4
1 :  LAPTH - Laboratoire d'Annecy-le-Vieux de Physique Théorique
lapth.cnrs.fr
CNRS : UMR5108 – Université de Savoie
9 Chemin de Bellevue - BP 110 74941 ANNECY LE VIEUX CEDEX
France
2 :  LPNHE - Laboratoire de Physique Nucléaire et de Hautes Énergies
http://www-lpnhep.in2p3.fr
CNRS : UMR7585 – IN2P3 – Université Pierre et Marie Curie (UPMC) - Paris VI – Université Paris VII - Paris Diderot
Barre 12-22, 1er étage 4 Place Jussieu 75252 Paris Cedex 05
France
3 :  Department of Physics, University of Toyama
University of Toyama
Department of Physics, University of Toyama, 3190 Gofuku, Toyama 930-8555, Japan
Japon
4 :  Skobeltsyn Inst. of Nuclear Physics, Moscow State
Moscow State University
Skobeltsyn Inst. of Nuclear Physics, Moscow State Univ., Moscow 119992, Russia
Russie, Fédération De
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.
Anglais
26/01/2012

Presented at the 2011 Hadron Collider Physics symposium (HCP-2011), Paris, France, November 14-18 2011, 3 pages, 4 figures
LAPTH-Conf-007/12

Lien vers le texte intégral : 
http://fr.arXiv.org/abs/1201.5582