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Search for exotic resonances decaying into WZ/ZZ in pp collisions at sqrt(s) = 7 TeV

Abstract : A search for new exotic particles decaying to the VZ final state is performed, where V is either a W or a Z boson decaying into two overlapping jets and the Z decays into a pair of electrons, muons or neutrinos. The analysis uses a data sample of pp collisions corresponding to an integrated luminosity of 5 inverse femtobarns collected by the CMS experiment at the LHC at sqrt(s) = 7 TeV in 2011. No significant excess is observed in the mass distribution of the VZ candidates compared with the background expectation from standard model processes. Model-dependent upper limits at the 95% confidence level are set on the product of the cross section times the branching fraction of hypothetical particles decaying to the VZ final state as a function of mass. Sequential standard model W' bosons with masses between 700 and 940 GeV are excluded. In the Randall-Sundrum model for graviton resonances with a coupling parameter of 0.05, masses between 750 and 880 GeV are also excluded.
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http://hal.in2p3.fr/in2p3-00757446
Contributor : Sylvie Flores <>
Submitted on : Tuesday, November 27, 2012 - 7:17:39 AM
Last modification on : Wednesday, November 25, 2020 - 4:10:43 PM

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S. Chatrchyan, M. Besançon, S. Choudhury, M. Dejardin, D. Denegri, et al.. Search for exotic resonances decaying into WZ/ZZ in pp collisions at sqrt(s) = 7 TeV. Journal of High Energy Physics, Springer, 2013, 2, pp.036. ⟨10.1007/JHEP02(2013)036⟩. ⟨in2p3-00757446⟩

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