Results 21 to 30 of about 925 (299)
Consequences of a U(2) flavour symmetry [PDF]
Physics Letters B, 1997 While solving the supersymmetric flavour problem, a U(2) flavour symmetry might be at the origin of the pattern of fermion masses and mixings. The consequences of this hypothesis are spelled out concerning the parameters of the CKM matrix and their observability in B- and K-physics.
Riccardo Barbieri +2 more
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Reviews of Modern Physics, 2021 We provide a general classification of flavour symmetries according to their interplay with the proper Poincare' and gauge groups and to their linear or nonlinear action in field space. We focus on the lepton sector and we review the different types of symmetries describing neutrino masses and the lepton mixing matrix.
Feruglio, F., Romanino, A.
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Combining Flavour and CP Symmetries [PDF]
Journal of Physics: Conference Series, 2013 I shortly review the impact of the most recent neutrino oscillation data on our attempts to construct a realistic model for neutrino masses and mixing angles. Models based on anarchy and its variants remain an open possibility, reinforced by the latest experimental findings.
Ferruccio Feruglio
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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.
Holthausen, M., Lindner, M., Schmidt, M.
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CPV Predictions from Flavour Symmetries [PDF]
Proceedings of Neutrino Oscillation Workshop — PoS(NOW2016), 2017 In the reference 3-neutrino mixing scheme leptonic CP violation can be caused by the Dirac, $\delta$, and/or Majorana, $\alpha_{21}$ and $\alpha_{31}$, CP-violating phases present in the unitary neutrino mixing matrix $U$. Using the fact that $U = U_e^\dagger U_\nu$, $U_e$ and $U_\nu$ being unitary matrices diagonalising the charged lepton and neutrino
Girardi I, Petcov S, Titov A
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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 ...
Ferretti L, King SF, Romanino, Andrea
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Flavoured leptogenesis and CPμτ symmetry [PDF]
Journal of High Energy Physics, 2020 Abstract We present a systematic study of leptogenesis in neutrino mass models with μτ-flavoured CP symmetry. In addition to the strong hierarchical N1-dominated scenario (N 1DS) in the ‘two flavour regime’ of leptogenesis, we show that one may choose the right-handed (RH) neutrino mass hierarchy as mild as M
Samanta, Rome, Sen, Manibrata
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Lepton flavour violation and flavour symmetries [PDF]
Fortschritte der Physik, 2012 AbstractIn this review article, we highlight the impact of models incorporating flavour symmetries on charged lepton flavour violating (LFV) processes. Flavour symmetries provide a natural approach to explain the peculiar mass hierarchies and mixing patterns of the Standard Model fermions.
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Modular binary octahedral symmetry for flavor structure of Standard Model
Journal of High Energy Physics, 2023 We have investigated the modular binary octahedral group 2O as a flavor symmetry to explain the structure of Standard Model. The vector-valued modular forms in all irreducible representations of this group are constructed. We have classified all possible
Gui-Jun Ding +3 more
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Combining Pati-Salam and flavour symmetries [PDF]
Journal of High Energy Physics, 2015 26 pages, 5 ...
Feldmann, Thorsten +3 more
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