Results 11 to 20 of about 20,379 (180)

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,
Darius A. Faroughy, Gino Isidori, Felix Wilsch, Kei Yamamoto   +3 more
doaj   +5 more sources

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, J. T. Penedo, S. T. Petcov   +2 more
doaj   +6 more sources

Abelian Flavour Symmetries in Supersymmetric Models

Nuclear Physics B, 1996
We propose a theory of flavour based on abelian horizontal gauge symmetries and modular invariances. We construct explicit supergravity models where the scale of the horizontal $U(1)$ symmetry breaking is fixed by the Green-Schwarz mechanism for anomaly ...
Antoniadis, Atick, Bagger, Bagger, Berezhiani, Berezhiani, Bijnens, Binétruy, Binétruy, Brax, Brignole, Brignole, Buccella, C. Grojean, C.A. Savoy, Casas, Choudhury, Cremmer, Cvetic, Dine, Dine, Dudas, Dudas, E. Dudas, Fayet, Ferrara, Ferrara, Font, Font, Font, Froggatt, Gabbiani, Giudice, Green, Grossman, Ibáñez, Ibáñez, Ibáñez, Jain, Kaplunovsky, Kikkawa, Leurer, Leurer, Nir, Nir, Ramond, S. Pokorski, Sakai   +47 more
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Flavour physics without flavour symmetries [PDF]

Physical Review D, 2017
We quantitatively analyze a quark-lepton flavour model derived from a six-dimensional supersymmetric theory with $SO(10)\times U(1)$ gauge symmetry, compactified on an orbifold with magnetic flux.
Buchmuller, Wilfried, Patel, Ketan M.
core   +5 more sources

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
exaly   +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
doaj   +3 more sources

Combining Pati-Salam and Flavour Symmetries [PDF]

Journal of High Energy Physics, 2015
We construct an extension of the Standard Model (SM) which is based on grand unification with Pati-Salam symmetry. The setup is supplemented with the idea of spontaneous flavour symmetry breaking which is mediated through flavon fields with ...
Feldmann, Thorsten, Hartmann, Florian, Kilian, Wolfgang, Luhn, Christoph   +3 more
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Flavour Symmetries and Kahler Operators [PDF]

Journal of High Energy Physics, 2004
Any supersymmetric mechanism to solve the flavour puzzle would generate mixing both in the superpotential Yukawa couplings and in the Kahler potential.
A Ibarra, A.L. Kagan, Canonization of kinetic terms was discussed in the context of electrodynamics in G. Feinberg, H.K. Dreiner, H.K. Dreiner, I. Jack, J.R Espinosa, K. Choi, M. Battaglia ., M. Dine, M. Kobayashi, N. Cabibbo, N. Irges, Particle Data Group collaboration, S.F. King, Some nice reviews on the flavour puzzle are: G.G. Ross, The effect of canonical normalization on the mixing matrix has been discussed in \cite{Leurer:1992wg, Z. Maki   +17 more
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Low-scale leptogenesis with flavour and CP symmetries

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.
M. Drewes, Y. Georis, C. Hagedorn, J. Klarić   +3 more
doaj   +2 more sources

Sequential Flavour Symmetry Breaking [PDF]

Physical Review D, 2009
The gauge sector of the Standard Model (SM) exhibits a flavour symmetry which allows for independent unitary transformations of the fermion multiplets. In the SM the flavour symmetry is broken by the Yukawa couplings to the Higgs boson, and the resulting
A. Weiler, G. G. Ross, Martin Jung, R. D. Peccei, S. Gori, Thomas Mannel, Thorsten Feldmann   +6 more
core   +4 more sources