Results 1 to 10 of about 1,069 (280)
U(1) flavour symmetries as Peccei-Quinn symmetries [PDF]
Journal of High Energy Physics, 2019 We investigate to what extent a generic, generation-dependent U(1) symmetry acting on the quark Yukawa operators can reduce the number of free parameters by forcing some entries in the Yukawa matrices to vanish.
Enrico Nardi +2 more
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Flavour symmetries in the SMEFT [PDF]
Journal of High Energy Physics, 2020 We analyse how U(3)5 and U(2)5 flavour symmetries act on the Standard Model Effective Field Theory, providing an organising principle to classify the large number of dimension-six operators involving fermion fields. A detailed counting of such operators,
Kei Yamamoto +2 more
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6d SCFTs and U(1) flavour symmetries [PDF]
Journal of High Energy Physics, 2018 We study the behaviour of abelian gauge symmetries in six-dimensional N = (1,0) theories upon decoupling gravity and investigate abelian flavour symmetries in the context of 6d N = (1, 0) SCFTs.
Seung-Joo Lee +2 more
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CP and discrete flavour symmetries [PDF]
Journal of High Energy Physics, 2013 We give a consistent definition of generalised CP transformations in the context of discrete flavour symmetries. Non-trivial consistency conditions imply that every generalised CP transformation can be interpreted as a representation of an automorphism of the discrete group.
Manfred Lindner +2 more
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Low-scale leptogenesis with flavour and CP symmetries [PDF]
Journal of High Energy Physics, 2022 We consider a type-I seesaw framework endowed with a flavour symmetry, belonging to the series of non-abelian groups ∆(3 n 2) and ∆(6 n 2), and a CP symmetry.
Juraj Klaric +2 more
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Discrete flavour symmetries in light of T2K [PDF]
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 2011 1+11 pages, 1 figure; v2: matches journal ...
Ferruccio Feruglio
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Flavour from accidental symmetries [PDF]
Journal of High Energy Physics, 2006 We consider a new approach to fermion masses and mixings in which no special "horizontal" dynamics is invoked to account for the hierarchical pattern of charged fermion masses and for the peculiar features of neutrino masses. The hierarchy follows from the vertical, family-independent structure of the model, in particular from the breaking pattern of ...
Luca Ferretti +2 more
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Modular flavour symmetries and modulus stabilisation
Journal of High Energy Physics, 2022 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 τ we find that a class of these potentials has (non-fine ...
P. P. Novichkov +2 more
doaj +5 more sources
Modular flavour symmetry and orbifolds
Journal of High Energy Physics, 2023 We develop a bottom-up approach to flavour models which combine modular symmetry with orbifold constructions. We first consider a 6d orbifold 𝕋2 /ℤ N , with a single torus defined by one complex coordinate z and a single modulus field τ, playing the role
Francisco J. de Anda, Stephen F. King
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Abelian flavour symmetries in supersymmetric models
Nuclear Physics B, 1996 30 pages, LaTeX, no ...
Stefan Pokorski, C A Savoy, E Dudas
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