Results 31 to 40 of about 925 (299)

Breaking flavour symmetry spontaneously [PDF]

Physics Letters B, 1997
Major revisions in text, 12 pages, RevTeX, 5 ...
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Weak decays of antitriplet charmed baryons from the perspective of flavor symmetry

Journal of High Energy Physics, 2023
In this work, we carry out a global fit for the two-body weak decays of antitriplet charmed baryons in both SU(3) respected and broken scenarios incorporating all the available data up to date. In the SU(3) irreducible representation approach (IRA), more
Huiling Zhong, Fanrong Xu, Qiaoyi Wen, Yu Gu   +3 more
doaj   +1 more source

THE FLAVOUR PROBLEM AND FAMILY SYMMETRY [PDF]

String Phenomenology 2003, 2004
We show how two different family symmetries can be used to address the flavour problem in SO(10)-like models. The first is based on a gauged $U(1)_F$, whose problems dissappear in the context of a type I string model embedding. The second is based on $SU(3)_F$, the maximal family group consistent with SO(10); in this case the family symmetry is more ...
King, S.F., Peddie, I.N.R
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Modular A5 symmetry for flavour model building [PDF]

Journal of High Energy Physics, 2019
Abstract In the framework of the modular symmetry approach to lepton flavour, we consider a class of theories where matter superfields transform in representations of the finite modular group Γ5 ≃ A 5. We explicitly construct a basis for the 11 modular forms of weight 2 and level 5.
P. P. Novichkov, J. T. Penedo, S. T. Petcov, A. V. Titov   +3 more
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Symmetry constrained two Higgs doublet models

European Physical Journal C: Particles and Fields, 2018
We study two-Higgs-doublet models (2HDM) where Abelian symmetries have been introduced, leading to a drastic reduction in the number of free parameters in the 2HDM.
João M. Alves, Francisco J. Botella, Gustavo C. Branco, Fernando Cornet-Gomez, Miguel Nebot, João P. Silva   +5 more
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Flavor physics without flavor symmetries

Physical Review D, 2018
Minor additions; Published ...
Buchmuller, Wilfried, Patel, Ketan M.
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Generation of SU(3) sum rule for charmed baryon decay

Journal of High Energy Physics, 2022
Flavor SU(3) symmetry is a powerful tool to analyze charmed baryon decays. In this work, we propose an approach to generate SU(3) sum rules for the singly and doubly charmed baryon decays without writing the Wigner-Eckhart invariants explicitly. The SU(3)
Di Wang
doaj   +1 more source

Phenomenology of Flavour (and CP) Symmetries

Acta Physica Polonica B Proceedings Supplement
Claudia Hagedorn
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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. In this paper we study, in a model independent way, the impact of the nontrivial structure of the Kahler potential on the physical mixing matrix, after kinetic terms are canonically normalized.
Espinosa, J. R., Ibarra, A.
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Simplified models of flavourful leptoquarks

European Physical Journal C: Particles and Fields, 2019
We study the implications of single leptoquark extensions of the Standard Model (SM) under the assumption that their enhanced Yukawa sectors are invariant under global Abelian flavour symmetries already present in SM mass terms.
Ivo de Medeiros Varzielas, Jim Talbert
doaj   +1 more source