“School of Particles”
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| Paper IPM / Particles / 12139 |
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A search for pair-produced heavy vector-like charge-2/3 quarks, T, in pp collisions at a center-of-mass energy of 7 TeV, is performed with the CMS detector at the LHC.Events consistent with the favor-changing-neutral-current decay of a T quark to a top quark and a Z boson are selected by requiring two leptons from the Z-boson decay, as well as an additional isolated charged lepton. In a data sample corresponding to an integrated luminosity of 1.14 fb-1 , the number of observed events is found to be consistent with the standard model background prediction. Assuming a branching fraction of 100
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