Minimal flavour violation: an effective field theory approach

By G. D’Ambrosio, G. Giudice, G. Isidori, A. Strumia. 2002

1,010 citations recorded by the source corpus.

We present a general analysis of extensions of the Standard Model which satisfy the criterion of Minimal Flavour Violation (MFV). We define this general framework by constructing a low-energy effective theory containing the Standard Model fields, with one or two Higgs doublets and, as the only source of SU(3) 5 flavour symmetry breaking, the background values of fields transforming under the flavour group as the ordinary Yukawa couplings. We analyse present bounds on the effective scale of dimension-six operators, which range between 1 and 10 TeV, with the most stringent constraints imposed by B → Xsγ. In this class of theories, it is possible to relate predictions for FCNC processes in B physics to those in K physics. We compare the sensitivity of various experimental searches in probing the hypothesis of MFV. Within the two-Higgs-doublet scenario, we develop a general procedure to obtain all tan β-enhanced Higgs-mediated FCNC amplitudes, discussing in particular their impact in B → l + l − , �MB and B → Xsγ. As a byproduct, we derive some two-loop tan β-enhanced supersymmetric contributions to B → Xsγ previously unknown.

Subfields: Nuclear and High Energy Physics, Political Science and International Relations

View Paper: https://www.semanticscholar.org/paper/7b567677576048e33cc5ae1b3bf50fbf04412647

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Nuclear and High Energy Physics

1. Andrzej Buras
2. David M. Straub
3. M. Jung
4. W. Altmannshofer
5. Stefania Gori
6. A. Pich
7. P. Paradisi
8. G. Isidori

In Political Science and International Relations

1. Andrzej Buras
2. M. Redi
3. M. Jung
4. A. Weiler
5. P. Paradisi
6. A. Pich
7. Stefania Gori
8. David M. Straub

Citations in the corpus

• Present Status of Inclusive Rare B Decays (2002, background): “In [126], a consistent definition was presented, which essentially requires that all flavour and CP-violating interactions be linked to the known structure of Yukawa couplings.”
• Charged-Higgs phenomenology in the aligned two-Higgs-doublet model (2010, background): “Minimal flavour violation within the context of the Type II 2HDM has been discussed in [27].”
• Model-independent constraints on new physics in b → s transitions (2011, methodology): “in models with MFV in the definition of [1, 2], i.”