A subject of major importance in fundamental physics is the investigation of the origin of Electroweak Symmetry Breaking. The mechanism of mass generation through the spontaneous breaking of a gauge symmetry, called the Brout-Englert-Higgs mechanism, associated with the appearance of a physical scalar boson, was introduced in particle physics in 1964 by Robert Brout and Francois Englert and, independently, by Peter Higgs. Another essential paper on the subject by Gerald Guralnik, Carl Hagen and Tom Kibble also appeared the same year. This mechanism was applied to weak interactions three years later by Steven Weinberg and Abdus Salam, and incorporated within the Standard Model, also including fermion mass generation through Yukawa couplings.

The discovery announced at CERN on 4th July 2012 by the ATLAS and CMS Collaborations of a boson at a mass close to 125 GeV, compatible with this scalar boson of the Standard Model, the so-called Higgs boson, mainly in γγ, ZZ and WW decay modes, with compatible evidence also found at Fermilab in the bb mode, changed the landscape.

This 4th workshop of the "Higgs Hunting" series organized in Orsay on July 25-27, 2013 will discuss the developments of ongoing analyses, detailed studies of the new boson and possible deviations from Standard Model properties. Searches for additional bosons, prospects with future accelerators and recent theoretical developments will also be covered.

This workshop will take place just after the EPS Conference in Stockholm (from 18 till 24 July 2013) and provides an ideal occasion for in-depth discussions on the latest results.

Registration will start on January 10th, 2013 until July 14th, 2013

The last day of the meeting will be held in Downtown Paris ( close to Notre Dame) at the Institut des Cordeliers - Université Pierre et Marie Curie 21, rue de l'Ecole de Médecine 75006 Paris (Main room called Farabeuf).