219 research outputs found
Introduction to flavour physics
We give a brief introduction to flavour physics. The first part covers the
flavour structure of the Standard Model, how the Kobayashi-Maskawa mechanism is
tested and provides examples of searches for new physics using flavour
observables, such as meson mixing and rare decays. In the second part we give a
brief overview of the recent flavour anomalies and how the Higgs can act as a
new flavour probe.Comment: 32 pages, 22 figures, the write-up is a combination of lectures given
at ESHEP 2018, SSI 2018 and the US Belle II summer schools, Fig. 1 corrected,
several typographical errors fixe
Constraints on CP-violating Higgs couplings to the third generation
Discovering CP-violating effects in the Higgs sector would constitute an
indisputable sign of physics beyond the Standard Model. We derive constraints
on the CP-violating Higgs-boson couplings to top and bottom quarks as well as
to tau leptons from low-energy bounds on electric dipole moments, resumming
large logarithms when necessary. The present and future projections of the
sensitivities and comparisons with the LHC constraints are provided.
Non-trivial constraints are possible in the future, even if the Higgs boson
only couples to the third-generation fermions.Comment: 26 pages, 10 figures; typos corrected, version as published in JHE
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