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Search for leptonic decays of W' bosons in pp collisions at sqrt(s)=7 TeV

Abstract : A search for a new heavy gauge boson W' decaying to an electron or muon, plus a low mass neutrino, is presented. This study uses data corresponding to an integrated luminosity of 5.0 inverse femtobarns, collected using the CMS detector in pp collisions at a centre-of-mass energy of 7 TeV at the LHC. Events containing a single electron or muon and missing transverse momentum are analyzed. No significant excess of events above the standard model expectation is found in the transverse mass distribution of the lepton-neutrino system, and upper limits for cross sections above different transverse mass thresholds are presented. Mass exclusion limits at 95% CL for a range of W' models are determined, including a limit of 2.5 TeV for right-handed W' bosons with standard-model-like couplings and limits of 2.43--2.63 TeV for left-handed W' bosons, taking into account their interference with the standard model W boson. Exclusion limits have also been set on Kaluza--Klein W[KK] states in the framework of split universal extra dimensions.
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http://hal.in2p3.fr/in2p3-00690612
Contributor : Sylvie Flores <>
Submitted on : Tuesday, April 24, 2012 - 8:33:55 AM
Last modification on : Wednesday, January 6, 2021 - 6:44:02 PM

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S. Chatrchyan, M. Besancon, S. Choudhury, M. Dejardin, D. Denegri, et al.. Search for leptonic decays of W' bosons in pp collisions at sqrt(s)=7 TeV. Journal of High Energy Physics, Springer, 2012, 8, pp.23. ⟨10.1007/JHEP08(2012)023⟩. ⟨in2p3-00690612⟩

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