Aligned and Spontaneous Flavor Violation.

Egana-Ugrinovic, Daniel; Homiller, Samuel; Meade, Patrick

Egana-Ugrinovic, Daniel; Homiller, Samuel; Meade, Patrick.

Afiliación

Egana-Ugrinovic D; C. N. Yang Institute for Theoretical Physics, Stony Brook University, Stony Brook, New York 11794, USA.
Homiller S; C. N. Yang Institute for Theoretical Physics, Stony Brook University, Stony Brook, New York 11794, USA.
Meade P; Physics Department, Brookhaven National Laboratory, Upton, New York 11973, USA.

Phys Rev Lett ; 123(3): 031802, 2019 Jul 19.

Article en En | MEDLINE | ID: mdl-31386464

RESUMEN

We present a systematic spurion setup called aligned flavor violation (AFV) that allows for new physics couplings to quarks that are aligned with standard model (SM) Yukawa couplings, but do not necessarily share their hierarchies nor are family universal. Additionally, we show that there is an important subset of AFV called spontaneous flavor violation (SFV), which naturally arises from UV completions where the quark family number and CP groups are spontaneously broken. Flavor-changing neutral currents are strongly suppressed in SFV extensions of the SM. We study SFV from an effective field theory perspective and demonstrate that SFV new physics with significant and preferential couplings to first or second generation quarks may be close to the TeV scale.

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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Phys Rev Lett Año: 2019 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Estados Unidos

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