University of Minnesota
School of Physics & Astronomy

Physics and Astronomy Calendar

Wednesday, August 13th 2014
Speaker: Joe Pastika
Subject: Search for a Heavy Right-Handed W Boson and Heavy Neutrino of the Left-Right Symmetric Standard Model

The search for direct production of a heavy right-handed WR- boson, which decays to a right-handed neutrino N(l)(l=e,mu) consistent with a left-right symmetric extension to the standard model, will be presented. The search was conducted using the full 19.7 fb - 1- of proton-proton collision data collected at a center of mass energy of \sqrt{s}=8 TeV by the Compact Muon Solenoid detector at the Large Hadron Collider. The search is conducted in a final state containing two same-flavor leptons and two jets. No significant deviation from the standard model is observed in either channel. 95% confidence level exclusion limits on the disallowed region in the plane of WR- mass versus right-handed neutrino mass are set for the electron and muon channel that extends up to 3 TeV in WR- mass and exclude most neutrino masses below the mass of the WR- . The electron and muon channel data is also combined assuming degenerate right-handed neutrino masses.

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