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Colloquia

 

Coming Up: November 24, 2014 --James Olsen (Princeton University)

"Nature of the New Boson: a lonely Higgs, or one of many cousins?"

Recent measurements from the ATLAS and CMS experiments indicate that the new boson discovered in 2012 at the Large Hadron Collider (LHC) at CERN is a Higgs boson.  In the standard model of particle physics, one Higgs boson is sufficient to give mass to the W and Z particles, as well as the fundamental fermions (quarks and leptons), while also ensuring that the photon remains massless.  Although this is the most economical scenario that explains electroweak symmetry breaking and the origin of fundamental particle masses, motivated extensions of the standard model predict multiple Higgs bosons with a rich phenomenology that could be detectable at the LHC.  In this colloquium I will present an overview of what we have learned about the Higgs boson from measurements based on the 2011-2012 data run, discuss the status of searches for additional Higgs particles, and close with a brief summary of prospects for the coming LHC run at higher energy scheduled to begin in spring, 2015.


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