Fermion hierarchies in SU(5) grand unification from Γ 6 $$ {\Gamma}_6^{\prime } $$ modular flavor symmetry

Yoshihiko Abe (Department of Physics, University of Wisconsin, Madison, WI, 53706, USA) ; Tetsutaro Higaki (Department of Physics, Keio University, Yokohama, 223-8522, Japan) ; Junichiro Kawamura (Center for Theoretical Physics of the Universe, Institute for Basic Science (IBS), Daejeon, 34051, Korea) ; Tatsuo Kobayashi (Department of Physics, Hokkaido University, Sapporo, 060-0810, Japan)

We construct an SU(5) grand unified model in which the hierarchies of the quark and lepton masses and mixing are explained by the Γ 6 $$ {\Gamma}_6^{\prime } $$ modular flavor symmetry. The hierarchies are realized by the Froggatt-Nielsen-like mechanism due to the residual Z 6 T $$ {Z}_6^T $$ symmetry, approximately unbroken at τ ~ i∞. We argue that the Γ 6 $$ {\Gamma}_6^{\left({}^{\prime}\right)} $$ symmetry is the minimal possibility to realize the up-type quark mass hierarchies, since the Yukawa matrix is symmetric. We find a combination of the representations and modular weights and then show numerical values of (1) coefficients for the realistic fermion hierarchies.

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      "surname": "Higaki", 
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      "surname": "Kawamura", 
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      "surname": "Kobayashi", 
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      "title": "Fermion hierarchies in SU(5) grand unification from   <math> <msubsup> <mi>\u0393</mi> <mn>6</mn> <mo>\u2032</mo> </msubsup> </math>  $$ {\\Gamma}_6^{\\prime } $$  modular flavor symmetry"
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  "abstracts": [
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      "source": "Springer", 
      "value": "We construct an SU(5) grand unified model in which the hierarchies of the quark and lepton masses and mixing are explained by the   <math> <msubsup> <mi>\u0393</mi> <mn>6</mn> <mo>\u2032</mo> </msubsup> </math>  $$ {\\Gamma}_6^{\\prime } $$  modular flavor symmetry. The hierarchies are realized by the Froggatt-Nielsen-like mechanism due to the residual   <math> <msubsup> <mi>Z</mi> <mn>6</mn> <mi>T</mi> </msubsup> </math>  $$ {Z}_6^T $$  symmetry, approximately unbroken at \u03c4 ~ i\u221e. We argue that the   <math> <msubsup> <mi>\u0393</mi> <mn>6</mn> <mfenced> <msup> <mrow></mrow> <mo>\u2032</mo> </msup> </mfenced> </msubsup> </math>  $$ {\\Gamma}_6^{\\left({}^{\\prime}\\right)} $$  symmetry is the minimal possibility to realize the up-type quark mass hierarchies, since the Yukawa matrix is symmetric. We find a combination of the representations and modular weights and then show numerical values of (1) coefficients for the realistic fermion hierarchies."
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Published on:
17 August 2023
Publisher:
Springer
Published in:
Journal of High Energy Physics , Volume 2023 (2023)
Issue 8
Pages 1-26
DOI:
https://doi.org/10.1007/JHEP08(2023)097
arXiv:
2307.01419
Copyrights:
The Author(s)
Licence:
CC-BY-4.0

Fulltext files: