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Search for leptonic decays of W′ bosons in pp collisions at √s = 7 TeV

Chatrchyan, S ; Sharif University of Technology | 2012

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  1. Type of Document: Article
  2. DOI: 10.1007/JHEP08(2012)023
  3. Publisher: 2012
  4. Abstract:
  5. 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 fb -1, 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. W′ 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 W′ 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 WKK states in the framework of split universal extra dimensions
  6. Keywords:
  7. Hadron-Hadron Scattering
  8. Source: Journal of High Energy Physics ; Volume 2012, Issue 8 , 2012 ; 11266708 (ISSN)
  9. URL: http://link.springer.com/article/10.1007%2FJHEP08%282012%29023