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A 125 GeV composite Higgs boson versus flavour and electroweak precision tests
Riccardo Barbieri, Dario Buttazzo, Filippo Sala +2
A composite Higgs boson of 125 GeV mass, only mildly fine-tuned, requires top partners with a semi-perturbative coupling and a mass not greater than about a TeV. We analyze the str…
Less Minimal Flavour Violation
Riccardo Barbieri, Dario Buttazzo, Filippo Sala +1
We consider the approximate U(2)^3 flavour symmetry exhibited by the quark sector of the Standard Model and all its possible breaking terms appearing in the quark Yukawa couplings.…
Cornering New Physics in b --> s Transitions
Wolfgang Altmannshofer, David M. Straub
We derive constraints on Wilson coefficients of dimension-six effective operators probing the b --> s transition, using recent improved measurements of the rare decays Bs --> mu+mu…
Overview of constraints on new physics in rare B decays
David M. Straub
Recent improved measurements of B decays probing the b->s flavour-changing neutral current have put strong constraints on flavour violation beyond the Standard Model. This talk rev…
Flavour physics from an approximate U(2)^3 symmetry
Riccardo Barbieri, Dario Buttazzo, Filippo Sala +1
The quark sector of the Standard Model exhibits an approximate U(2)^3 flavour symmetry. This symmetry, broken in specific directions dictated by minimality, can explain the success…
Gauged flavour symmetry for the light generations
Raffaele Tito D'Agnolo, David M. Straub
We study the phenomenology of a model where an SU(2)^3 flavour symmetry acting on the first two generation quarks is gauged and Yukawa couplings for the light generations are gener…
Minimal Flavour Violation and Beyond
Gino Isidori, David M. Straub
We review the formulation of the Minimal Flavour Violation (MFV) hypothesis in the quark sector, as well as some "variations on a theme" based on smaller flavour symmetry groups an…