Deciphering Universal Extra Dimension from the top quark signals at the CERN LHC

Details Deciphering Universal Extra Dimension from the top quark signals at the CERN LHC Deciphering Universal Extra Dimension from the top quark signals at the CERN LHC

2009-11-20

arxiv.org/abs/0911.4064v3

Physics

High Energy Physics

High Energy Physics - Phenomenology

18 pages, 14 figures, Accepted for publication in JHEP

Scientific paper

Models based on Universal Extra Dimensions predict Kaluza-Klein (KK) excitations of all Standard Model (SM) particles. We examine the pair production of KK excitations of top- and bottom-quarks at the Large Hadron Collider. Once produced, the KK top/bottom quarks can decay to $b$-quarks, leptons and the lightest KK-particle, $\gamma_1$, resulting in 2 $b$-jets, two opposite sign leptons and missing transverse momentum, thereby mimicing top-pair production. We show that, with a proper choice of kinematic cuts, an integrated luminosity of 100 fb$^{-1}$ would allow a discovery for an inverse radius upto $R^{-1} = 750$ GeV.

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