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Seminar Series 4: Dr. Chris Hearty

posted Nov 23, 2014, 10:09 AM by VP Academic
The last seminar of the term! Dr. Chris Hearty of TRIUMF will be speaking on "Belle II: searching for new physics in the heavy flavor sector" at 4pm in HENN 318 on Wednesday, November 26th. Come out for an hour of physics and snacks!

Belle II will probe the flavour sector of particle physics at the high-luminosity SuperKEKB e+e- collider, located at the KEK laboratory in Japan. The experiment has the goal of collecting thirty times the combined integrated luminosity of the two previous generation B-factories, PEP-II at SLAC and KEKB at KEK. This precision-frontier facility will open an exciting window on new energy scales beyond the reach of existing colliders, including the LHC, by virtue of quantum loop corrections that are sensitive to massive, and as yet undiscovered, particles. These hypothesized particles manifest themselves in precision measurements of processes involving bottom and charm quarks and tau leptons, such as CP violation and other asymmetries, rare decays, and processes that are forbidden within our current understanding of physics. This program is complementary to direct searches for new physics at the LHC.

The Canadian group is working on an upgrade of the electromagnetic calorimeter that will enable it to achieve excellent efficiency and resolution in the presence of very high luminosity-related backgrounds. It will use pure CsI crystals with fine mesh photomultiplier tubes and custom analog and digital electronics, which are being designed by the Canadian group.

In this talk, I will review the main physics motivations of the earlier generation of B factories, describe the physics program and status of Belle II, and present the Canadian calorimeter R&D effort.