Results 21 to 30 of about 20,760 (329)
Flavour symmetries at the EW scale [PDF]
Journal of Physics: Conference Series, 2011 We study the possibility of extending the Standard Model symmetries with a flavour symmetry at the electroweak scale. This requires the existence of a flavour-triplet of Higgses. We study the related scalar potential and its possible minima. It turns out that the new Higgses lead to extra contributions to the oblique corrections, Z and W decay and ...
Reinier de Adelhart Toorop
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Flavor anomalies meet flavor symmetry
Physical Review D, 2023 71 pages + appendices, 27 figures Matches version accepted for publication in Physical Review ...
Innes Bigaran +3 more
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On Continuous Flavour Symmetries for Neutrinos [PDF]
, 2015 8 pages. To appear in the proceedings of the Prospects in Neutrino Physics Conference, 15 -- 17 December, 2014, held at Queen Mary University of London ...
Luca Merlo
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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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European Physical Journal C: Particles and Fields, 2023 We investigate flavour bounds on the $${\mathcal {Z}}_2 \times {\mathcal {Z}}_5$$ Z 2 × Z 5 and $${\mathcal {Z}}_2 \times {\mathcal {Z}}_9$$ Z 2 × Z 9 flavour symmetries.
Gauhar Abbas +3 more
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Two A4 modular symmetries for Tri-Maximal 2 mixing
Nuclear Physics B, 2022 We construct a lepton flavour model based on two A4 modular symmetries. The two A4 are broken by a bi-triplet field to the diagonal A4 subgroup, resulting in an effective modular A4 flavour symmetry with two moduli. We employ these moduli as stabilisers,
Ivo de Medeiros Varzielas +1 more
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Journal of High Energy Physics, 2023 We present the first complete model of the Littlest Modular Seesaw, based on two right-handed neutrinos, within the framework of multiple modular symmetries, justifying the use of multiple moduli fields which take their values at 3 specific stabilizers ...
Ivo de Medeiros Varzielas +2 more
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FCNC-free multi-Higgs-doublet models from broken family symmetries
Physics Letters B, 2020 We demonstrate how residual flavour symmetries, infrared signatures of symmetry breaking in complete models of flavour, can naturally forbid (or limit in a flavour specific way) flavour-changing neutral currents (FCNC) in multi-Higgs-doublet models (MHDM)
Ivo de Medeiros Varzielas, Jim Talbert
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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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Spin-Flavour Symmetry and Contractions Towards Classical Space-Time Symmetry [PDF]
International Journal of Modern Physics A, 1997 A classification scheme of hadrons is proposed on the basis of the division algebra H of quaternions and an appropriate geometry. This scheme suggests strongly to understand flavour symmetry in another manner than from standard symmetry schemes. In our approach, we do not start from "exact" symmetry groups like SU(2) × SU(2) chiral symmetry and impose
Rolf Dahm
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