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Effective theories of flavor and the nonuniversal MSSM

Das, Dipankar LU ; López-Ibáñez, M. L.; Pérez, M. Jay and Vives, Oscar (2017) In Physical Review D 95(3).
Abstract

Flavor symmetries à la Froggatt-Nielsen provide a compelling way to explain the hierarchies of fermionic masses and mixing angles in the Yukawa sector. In supersymmetric (SUSY) extensions of the Standard Model where the mediation of SUSY breaking occurs at scales larger than the breaking of flavor, this symmetry must be respected not only by the Yukawas of the superpotential but also by the soft-breaking masses and trilinear terms. In this work we show that contrary to naive expectations, even starting with completely flavor blind soft breaking in the full theory at high scales, the low-energy sfermion mass matrices and trilinear terms of the effective theory, obtained upon integrating out the heavy mediator fields, are strongly... (More)

Flavor symmetries à la Froggatt-Nielsen provide a compelling way to explain the hierarchies of fermionic masses and mixing angles in the Yukawa sector. In supersymmetric (SUSY) extensions of the Standard Model where the mediation of SUSY breaking occurs at scales larger than the breaking of flavor, this symmetry must be respected not only by the Yukawas of the superpotential but also by the soft-breaking masses and trilinear terms. In this work we show that contrary to naive expectations, even starting with completely flavor blind soft breaking in the full theory at high scales, the low-energy sfermion mass matrices and trilinear terms of the effective theory, obtained upon integrating out the heavy mediator fields, are strongly nonuniversal. We explore the phenomenology of these SUSY flavor models after the latest LHC searches for new physics.

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Please use this url to cite or link to this publication:
author
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review D
volume
95
issue
3
publisher
American Physical Society
external identifiers
  • scopus:85021916248
ISSN
2470-0010
DOI
10.1103/PhysRevD.95.035001
language
English
LU publication?
no
id
c16ab064-67ef-45da-8790-8f627c1320e2
date added to LUP
2019-05-22 15:26:38
date last changed
2019-11-13 05:34:01
@article{c16ab064-67ef-45da-8790-8f627c1320e2,
  abstract     = {<p>Flavor symmetries à la Froggatt-Nielsen provide a compelling way to explain the hierarchies of fermionic masses and mixing angles in the Yukawa sector. In supersymmetric (SUSY) extensions of the Standard Model where the mediation of SUSY breaking occurs at scales larger than the breaking of flavor, this symmetry must be respected not only by the Yukawas of the superpotential but also by the soft-breaking masses and trilinear terms. In this work we show that contrary to naive expectations, even starting with completely flavor blind soft breaking in the full theory at high scales, the low-energy sfermion mass matrices and trilinear terms of the effective theory, obtained upon integrating out the heavy mediator fields, are strongly nonuniversal. We explore the phenomenology of these SUSY flavor models after the latest LHC searches for new physics.</p>},
  articleno    = {035001},
  author       = {Das, Dipankar and López-Ibáñez, M. L. and Pérez, M. Jay and Vives, Oscar},
  issn         = {2470-0010},
  language     = {eng},
  month        = {02},
  number       = {3},
  publisher    = {American Physical Society},
  series       = {Physical Review D},
  title        = {Effective theories of flavor and the nonuniversal MSSM},
  url          = {http://dx.doi.org/10.1103/PhysRevD.95.035001},
  volume       = {95},
  year         = {2017},
}