Name: PHE/Theory seminar : Systematics of U-spin Amplitude Sum Rules
Start: 2022-10-25T11:00:00+02:00
End: 2022-10-25T12:00:00+02:00
Location: IJCLab

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

mardi 25 octobre 2022 - 11:00

lundi 24 octobre 2022
mardi 25 octobre 2022
11:00 Systematics of U-spin Amplitude Sum Rules - Margarita Gavrilova (Cornell University)
Systematics of U-spin Amplitude Sum Rules
- Margarita Gavrilova (Cornell University)
11:00 - 12:00
Room: 100/-1-A900 - Auditorium Joliot Curie 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.

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