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Séminaires transverses

Beyond EDMs: CP and Flavor violating quark dipole transitions

par Michele Tammaro (Jozef Stefan Institute, Ljubljana)

Europe/Paris
Amphi 1 - Bât.210 (IJCLab)

Amphi 1 - Bât.210

IJCLab

Description

Violation of charge conjugation and parity (CP) is one of the most intriguing phenomena in particle physics. In the Standard Model (SM) it is induced in quark flavor transitions: from CP-odd phases in the CKM matrix, and from the QCD \theta term, as in the neutron electric dipole moment (nEDM). While in the SM the interplay between these two sectors is very suppressed, this is not true in general in theories Beyond SM. Thus it requires to specify the flavor symmetry structure of the model. In this talk we investigate complementary flavour- and CP-violating effects of heavy NP, and study correlations between different flavor-violating processes and EDMs both within MFV and $U(2)$ flavor models. We consider dimension-6 effective operators within SMEFT that can contribute to CPV dipole transition observables at low energies, both via direct operator matching as well as through RGE mixing effects. We can then establish a connection between observable CPV effects at low energies and general NP present at some high scale, and present bounds on Wilson coefficients.