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PHE/Theory seminar : Systematics of U-spin Amplitude Sum Rules

Europe/Paris
100/-1-A900 - Auditorium Joliot Curie (IJCLab)

100/-1-A900 - Auditorium Joliot Curie

IJCLab

100
Show room on map
    • 11:00 AM 12:00 PM
      Systematics of U-spin Amplitude Sum Rules 1h 100/-1-A900 - Auditorium Joliot Curie

      100/-1-A900 - Auditorium Joliot Curie

      IJCLab

      100
      Show room on map

      One of the main goals of Flavor Physics is to overconstrain the CKM matrix. Non-perturbative QCD, however, makes this challenging by introducing hadronic matrix elements that cannot be reliably calculated. In our work, we use the approximate U-spin symmetry (d and s quark exchange) to get around this problem. In my talk, I will argue that, despite the relatively large breaking of the order 30%, the systematic expansion in U-spin breaking can be used for precision physics. I will also motivate the study of multibody hadron decays as a prospective direction where high precision theoretical predictions can be achieved. The first steps towards precision physics with U-spin are realized using our novel approach to deriving U-spin amplitude sum rules, which will be the main focus of this talk.

      Speaker: Mrs Margarita Gavrilova (Cornell University)