In 2012, the CMS and ATLAS collaborations based at the CERN Large Hadron Collider jointly announced the experimental discovery of the Higgs boson, the final missing piece of the Standard Model (SM) of particle physics. For CMS, the electromagnetic calorimeter (ECAL) was crucial for this achievement, since the decay of the Higgs boson to two photons was one of the golden channels for discovery. This opened a new door in the world of particle physics, prompting physicists to begin studying properties of the Higgs boson including its mass, width, and couplings to other SM particles. In addition, the Higgs boson is currently widely explored as a potential bridge to physics Beyond the Standard Model (BSM). One way to probe the properties of the Higgs boson and use it as a tool to hunt for BSM physics is by searching for the production of two Higgs bosons in a single process, known as Higgs pair production. In this seminar, the design and performance of the CMS ECAL will be described, and the search for pair-produced Higgs bosons decaying into two W-bosons and two photons with the CMS detector, the first search of its kind at CMS, will be presented.
Join from PC, Mac, Linux, iOS or Android: https://stanford.zoom.us/j/98973156241?pwd=cEU5RFdlVXoyc0JTeTlDMkozKzQ5UT09
Andrew Bradshaw, Sander Breur
(bradshaw@slac, sanderb@slac)
