We study the problem of modulus stabilisation in the framework of the modular symmetry approach to the flavour problem. By analysing simple UV-motivated CP-invariant potentials for the modulus tau we find that a class of these potentials has (non-fine-tuned) CP-breaking minima in the vicinity of the point of Z(3)(ST) residual symmetry, tau similar or equal to e(2 pi i/3). Stabilising the modulus at these novel minima breaks spontaneously the CP symmetry and can naturally explain the mass hierarchies of charged leptons and possibly of quarks.

Modular flavour symmetries and modulus stabilisation / Novichkov, P. P.; Penedo, J. T.; Petcov, S. T.. - In: JOURNAL OF HIGH ENERGY PHYSICS. - ISSN 1029-8479. - 2022:3(2022), pp. 1-27. [10.1007/jhep03(2022)149]

Modular flavour symmetries and modulus stabilisation

Penedo, J. T.;Petcov, S. T.
2022-01-01

Abstract

We study the problem of modulus stabilisation in the framework of the modular symmetry approach to the flavour problem. By analysing simple UV-motivated CP-invariant potentials for the modulus tau we find that a class of these potentials has (non-fine-tuned) CP-breaking minima in the vicinity of the point of Z(3)(ST) residual symmetry, tau similar or equal to e(2 pi i/3). Stabilising the modulus at these novel minima breaks spontaneously the CP symmetry and can naturally explain the mass hierarchies of charged leptons and possibly of quarks.
2022
2022
3
1
27
149
https://doi.org/10.1007/JHEP03(2022)149
https://arxiv.org/abs/2201.02020
Novichkov, P. P.; Penedo, J. T.; Petcov, S. T.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.11767/142091
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