Fermion Hierarchy from Sfermion Anarchy
Wolfgang Altmannshofer, Claudia Frugiuele, Roni Harnik

TL;DR
This paper proposes a minimal supersymmetric model where hierarchical fermion masses arise from loop processes involving anarchic sfermion matrices, matching observed patterns with some discrepancies.
Contribution
It introduces a novel mechanism generating fermion mass hierarchies from sfermion loops without requiring symmetries or small parameters.
Findings
First and second generation masses generated at 1-loop
Hierarchy between first and second generations achieved naturally
Model compatible with gauge and Yukawa unification with simple modifications
Abstract
We present a framework to generate the hierarchical flavor structure of Standard Model quarks and leptons from loops of superpartners. The simplest model consists of the minimal supersymmetric standard model with tree level Yukawa couplings for the third generation only and anarchic squark and slepton mass matrices. Agreement with constraints from low energy flavor observables, in particular Kaon mixing, is obtained for supersymmetric particles with masses at the PeV scale or above. In our framework both the second and the first generation fermion masses are generated at 1-loop. Despite this, a novel mechanism generates a hierarchy among the first and second generations without imposing a symmetry or small parameters. A second-to-first generation mass ratio of order 100 is typical. The minimal supersymmetric standard model thus includes all the necessary ingredients to realize a fermion…
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.
