Speaker
Attilio Picazio
(Universite de Geneve (CH))
Description
A search for narrow diboson resonances in a dijet final state is performed in 20.3 fb-1 of proton- proton collisions at a center-of-mass energy of sqrt(s) = 8 TeV, collected in 2012 by the ATLAS detector at the Large Hadron Collider. The jet mass and jet substructure properties have been used to tag each jet as a boson. Using the invariant mass distribution of the boson tagged dijet system, 95% CL exclusion limits are set on the production cross section times branching ratio to WW, WZ, or ZZ final states of W' Extended Gauge Model (EGM) bosons and Kaluza-Klein excitations of the graviton in the bulk Randall-Sundrum model, as a function of the resonance mass. The observed mass distributions exhibit an excess of events above 1.8 TeV.
Author
Attilio Picazio
(Universite de Geneve (CH))
