Results 51 to 60 of about 20,760 (329)

Flavor structures of quarks and leptons from flipped SU(5) GUT with A 4 modular flavor symmetry

Journal of High Energy Physics, 2023
We propose to generate the flavor structures of the Standard Model plus neutrinos from flipped SU(5) GUT with A 4 modular flavor symmetry. Possible way to assign different moduli values for quarks and leptons in modular GUT scheme is discussed.
Xiao Kang Du, Fei Wang
doaj   +1 more source

MODULAR SYMMETRY, TWISTED SECTORS AND FLAVOUR [PDF]

String Phenomenology, 2003
4 pages, ws-procs9x6.cls included.
openaire   +2 more sources

Neutrino masses and flavour symmetry [PDF]

Il Nuovo Cimento A, 1997
The problem of neutrino masses and mixing angles is analysed in a class of supersymmetric grand unified models, withSO(10) gauge symmetry and globalU(2) flavour symmetry. Adopting the seesaw mechanism for the generation of the neutrino masses, one obtains a mass matrix for the left-handed neutrinos which is directly related to the parameters of the ...
G. Costa, E. Lunghi
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Abelian flavour symmetries in supersymmetric models

Nuclear Physics B, 1996
30 pages, LaTeX, no ...
Dudas, E., Grojean, C., Pokorski, S., Savoy, C. A.   +3 more
openaire   +2 more sources

Flavourful SMEFT likelihood for Higgs and electroweak data

Journal of High Energy Physics, 2020
We perform an updated fit to LHC Higgs data and LEP electroweak precision tests in the framework of the Standard Model Effective Field Theory (SMEFT). We assume a generic structure of the SMEFT operators without imposing any flavour symmetries.
Adam Falkowski, David Straub
doaj   +1 more source

Finite family groups for fermionic and leptoquark mixing patterns

Journal of High Energy Physics, 2020
We employ a bottom-up and model-independent technique to search for non-Abelian discrete flavour symmetries capable of predicting viable CKM and PMNS matrices alongside of special patterns of leptoquark couplings.
Jordan Bernigaud, Ivo de Medeiros Varzielas, Jim Talbert   +2 more
doaj   +1 more source

Leading directions in the SMEFT

Journal of High Energy Physics, 2023
Short-distance new physics at (or slightly) above the TeV scale should not excessively violate the approximate flavor symmetries of the SM in order to comply with stringent constraints from flavor-changing neutral currents.
Admir Greljo, Ajdin Palavrić
doaj   +1 more source

Adding CP to flavour symmetries [PDF]

Journal of Physics: Conference Series, 2015
12 pages, 2 figures. Contribution to the Proceedings of the DISCRETE 2014 Conference.
openaire   +2 more sources

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.
Barbieri R, Hall LJ, Romanino, Andrea
openaire   +2 more sources

Adding Flavor to the SMEFT

Journal of High Energy Physics, 2022
We study the flavor structure of the lepton and baryon number-conserving dimension-6 operators in the Standard Model effective field theory (SMEFT). Building on the work of [1], we define several well-motivated flavor symmetries and symmetry-breaking ...
Admir Greljo, Ajdin Palavrić, Anders Eller Thomsen   +2 more
doaj   +1 more source