Results 31 to 40 of about 364 (120)
Modular flavor symmetry and vector-valued modular forms
Journal of High Energy Physics, 2022 We revisit the modular flavor symmetry from a more general perspective. The scalar modular forms of principal congruence subgroups are extended to the vector-valued modular forms, then we have more possible finite modular groups including Γ N and Γ N ′ $$
Xiang-Gan Liu, Gui-Jun Ding
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Multiple realizations of modular flavor symmetries and their phenomenology
Journal of High Energy PhysicsWe point out that specifying the finite modular group does not uniquely fix a modular flavor symmetry. We illustrate this using the finite modular group T′. Otherwise equivalent models based on different T′ lead to modular forms with different properties
Carlos Arriaga-Osante +6 more
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Accidental Peccei–Quinn symmetry from discrete flavour symmetry and Pati–Salam
Physics Letters B, 2018 We show how an accidental U(1) Peccei–Quinn (PQ) symmetry can arise from a discrete A4 family symmetry combined with a discrete flavour symmetry Z3×Z52, in a realistic Pati–Salam unified theory of flavour. Imposing only these discrete flavour symmetries,
Fredrik Björkeroth +2 more
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Yukawa textures from non-invertible symmetries
Journal of High Energy PhysicsPhenomenological aspects of non-invertible symmetries, in particular the flavor structure of quarks and leptons, are studied. We start with a ℤ M discrete symmetry and gauge ℤ2 so as to obtain a non-invertible symmetry. We study which Yukawa textures can
Tatsuo Kobayashi +2 more
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Predictions from a flavour GUT model combined with a SUSY breaking sector
Journal of High Energy Physics, 2017 We discuss how flavour GUT models in the context of supergravity can be completed with a simple SUSY breaking sector, such that the flavour-dependent (non-universal) soft breaking terms can be calculated.
Stefan Antusch, Christian Hohl
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More about quark Yukawa textures from selection rules without group actions
Journal of High Energy PhysicsWe study the coupling selection rules associated with non-group symmetries, i.e., ℤ2 gauging of ℤ M symmetries. We clarify which Yukawa textures can be derived by our selection rules for M = 3, 4, and 5, and obtain various textures including the nearest ...
Tatsuo Kobayashi +3 more
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Anatomy of non-leptonic two-body decays of charmed mesons into final states with η′
Journal of High Energy PhysicsWe show that D → Pη′ decay amplitudes, where P = K, π, η, cannot be simply related to their D → Pη counterparts with a single η 0–η 8 mixing angle. We propose a novel, consistent treatment of η 0–η 8 mixing for application in D → Pη and D → Pη′ decays ...
Carolina Bolognani +3 more
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Lepton mass textures from non-invertible multiplication rules
Journal of High Energy PhysicsWe study the lepton mass textures, which are derived by ℤ 2 gauging of ℤ M symmetries. We can obtain various textures for the Yukawa couplings in the charged lepton sector, but the patterns of neutrino mass matrices are limited. All the obtained textures
Tatsuo Kobayashi +3 more
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Flavour symmetries in a renormalizable SO(10) model
Nuclear Physics B, 2016 In the context of a renormalizable supersymmetric SO(10) Grand Unified Theory, we consider the fermion mass matrices generated by the Yukawa couplings to a 10⊕120⊕126‾ representation of scalars. We perform a complete investigation of the possibilities of
P.M. Ferreira +3 more
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Discrete flavour symmetries from the Heisenberg group
Physics Letters B, 2016 Non-abelian discrete symmetries are of particular importance in model building. They are mainly invoked to explain the various fermion mass hierarchies and forbid dangerous superpotential terms.
E.G. Floratos, G.K. Leontaris
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