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"Searching for the effects of physics beyond the Standard Model through flavor"

Data: 
Monday, 8 December, 2025 - 16:30 to 18:00
Palestrante: 
Prof. Damir Becirevic - IJCLAB, CNRS and University Paris-Saclay, France
Resumo: 
Resumo: 
In this talk I will first focus on two flavour physics quantities for which the experimentally measured values appear to be larger than predicted in the Standard Model, and propose a viable BSM scenario that can accommodate both discrepancies. The discussion will then entail the (in)famous $V_{cb}$-problem which can be describe and explain the possible ways out. In the last part of this talk, time permitting, I will argue that the radiative decays of quarkonia can be valuable for searching peculiar effects of New Physics. In that respect the novel lattice QCD results are particularly handy because the Standard Model amplitudes are fully controlled to high precision and should be matched by experiments.

 

Quantum Switch on a Superposition of Spherical Shells | Colóquio DFMA

Data: 
Wednesday, 15 October, 2025 - 16:30 to 17:30
Palestrante: 
Prof. Dr. Nelson Yokomizo - UFMG
Resumo: 

 

AbstractPhenomenological models have recently been explored for the analysis of possible effects in quantum systems due to a superposition of geometries, including the occurrence of processes with indefinite order. In particular, in a gravitational quantum switch, the order of operations applied by two agents on a target system is entangled with the state of the geometry. We consider a model describing the superposition of geometries produced by distinct arrangements of spherical mass shells, and show that a protocol for the implementation of a gravitational quantum switch can be formulated in such a system. 

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