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331 models facing new b -> s mu^+ mu^- data
Andrzej J. Buras, Fulvia De Fazio, Jennifer Girrbach
We investigate how the 331 models face new data on B_{s,d}->mu^+mu^- and B_d->K^*mu^+mu^- taking into account present constraints from Delta F=2 observables, low energy precision m…
Quark flavour observables in 331 models in the flavour precision era
Fulvia De Fazio
I discuss a new Physics scenario, the 331 model, based on the gauge group . In particular, I elaborate on correlations between flavour observa…
Towards the Identification of New Physics through Correlations between Flavour Observables
Andrzej J. Buras
We emphasize the power of correlations between flavour observables in the search for New Physics and identify a number of correlations that could allow to discover New Physics even…
Left-handed Z' and Z FCNC quark couplings facing new b -> s mu^+ mu^- data
Andrzej J. Buras, Jennifer Girrbach
In view of the recent improved data on B_{s,d}->mu^+ mu^- and B_d->K^*mu^+mu^- we revisit two simple NP scenarios in which new FCNC currents in b->s mu^+ mu^- transitions are media…
Towards the Identification of New Physics through Quark Flavour Violating Processes
Andrzej J. Buras, Jennifer Girrbach
We outline a systematic strategy which should help in this decade to identify New Physics beyond the Standard Model by means of quark flavour violating processes and thereby to ext…
Stringent Tests of Constrained Minimal Flavour Violation through Delta F=2 Transitions
Andrzej J. Buras, Jennifer Girrbach
New Physics contributions to Delta F=2 transitions in models with constrained Minimal Flavour Violation (CMFV), are parametrized by a single variable S(v), the value of the real bo…
Probing New Physics with the B_s to μ+ μ- Time-Dependent Rate
Andrzej J. Buras, Robert Fleischer, Jennifer Girrbach +1
The B_s to mu+ mu- decay plays an outstanding role in tests of the Standard Model and physics beyond it. The LHCb collaboration has recently reported the first evidence for this de…
The Anatomy of Neutral Scalars with FCNCs in the Flavour Precision Era
Andrzej J. Buras, Fulvia De Fazio, Jennifer Girrbach +2
In many extensions of the Standard Model flavour changing neutral current processes can be mediated by tree-level heavy neutral scalars and/or pseudo-scalars H^0(A^0). This general…
Particle-Antiparticle Mixing, CP Violation and Rare K and B Decays in a Minimal Theory of Fermion Masses
Andrzej J. Buras, Jennifer Girrbach, Robert Ziegler
We present a detailed study of Delta F=2 observables and of rare K^+(K_L) and B_{s,d} meson decays in a "Minimal Theory of Fermion Masses" (MTFM). In this theory Yukawa couplings a…