Hierarchies from higher flavor spin

A bstract We develop a framework in which Yukawa hierarchies arise from powers of fully anarchic spurions transforming in higher representations of the flavor symmetry group $$SU{\\left(2\\right)}^{{n}_{2}}\\times SU{\\left(3\\right)}^{{n}_{3}}$$ . The core mechanism is the progressive lifting of Yukawa ranks through successive outer products of composite doublets and triplets. We formulate the general construction in detail and build explicit models realizing it. We then investigate whether renormalizable scalar potentials for higher SU (2) representations can dynamically generate anarchic spurions with non-vanishing composites. The framework predicts distinctive patterns in flavor-changing neutral currents and potentially observable stochastic gravitational-wave backgrounds.

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Publication Details

Journal
Journal of High Energy Physics
Published
2026-09-21
DOI
https://doi.org/10.1007/jhep09(2026)226
Primary Topic
Cosmology and Gravitation Theories
Type
article
Field-Weighted Citation Impact
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article

Hierarchies from higher flavor spin

Admir Greljo, Alessandro Valenti
Journal of High Energy Physics
Cosmology and Gravitation Theories
article

Hierarchies from higher flavor spin

Admir Greljo, Alessandro Valenti
article en

Abstract

A bstract We develop a framework in which Yukawa hierarchies arise from powers of fully anarchic spurions transforming in higher representations of the flavor symmetry group $$SU{\left(2\right)}^{{n}_{2}}\times SU{\left(3\right)}^{{n}_{3}}$$ . The core mechanism is the progressive lifting of Yukawa ranks through successive outer products of composite doublets and triplets. We formulate the general construction in detail and build explicit models realizing it. We then investigate whether renormalizable scalar potentials for higher SU (2) representations can dynamically generate anarchic spurions with non-vanishing composites. The framework predicts distinctive patterns in flavor-changing neutral currents and potentially observable stochastic gravitational-wave backgrounds.

Journal of High Energy PhysicsVol. 2026(9)
University of Basel (CH)
Openalex Percentile: Top 56%
Cosmology and Gravitation Theories
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