Speaker
Description
Doubly charged Higgs-like particles (H++ and H--) are predicted in a variety of BSM models which include the Drell-Yan-like production mechanism, q qbar -> Z/gamma* -> H++ H--. Each doubly charged Higgs can decay to a pair of same-sign standard model leptons, producing events with distinctive signatures including electrons, muons, and taus. The most stringent experimental lower bound on the H++/-- mass is about 1 TeV from the ATLAS experiment. The first CMS search using Run 2 data is underway using same sign dielectron and dimuon channels. Studies with simulated standard model backgrounds show that events with H++ and H-- candidates of the same mass are highly suppressed. A control region is established with opposite-sign dilepton pairs with mass less than 500 GeV to test the modeling of standard model backgrounds. The expected sensitivity in H++/-- mass is discussed for Run 2 and beyond.
