Results 31 to 40 of about 2,383 (299)
Journal of High Energy Physics, 2023 We construct an SU(5) grand unified model in which the hierarchies of the quark and lepton masses and mixing are explained by the Γ 6 ′ $$ {\Gamma}_6^{\prime } $$ modular flavor symmetry.
Yoshihiko Abe +3 more
doaj +1 more source
Lepton-flavour violating decays in theories with dimension 6 operators [PDF]
, 2016 Despite a large experimental effort, so far no evidence for flavour-violating decays of charged leptons such as li → ljγ and li → ljlklk has been found. The absence of a signal puts very severe constraints on many extensions of the Standard Model.
Pruna Giovanni Marco, Signer Adrian
core +4 more sources
CKM substructure from the weak to the Planck scale
Journal of High Energy Physics, 2022 We look for relations among CKM matrix elements that are not consequences of the Wolfenstein parametrization. In particular, we search for products of CKM elements raised to integer powers that approximately equal 1.
Yuval Grossman +3 more
doaj +1 more source
Flavour violation in supersymmetric theories
Nuclear Physics B, 1985 Abstract We investigate in detail the question of lepton-flavour violation in a SU(2) × U(1) supersymmetric model, where the breaking of supersymmetry (SUSY) is achieved through the coupling to N = 1 supergravity. It is shown that in the limit of degenerate neutrino masses, lepton flavour is exactly conserved.
J.C. Romão +3 more
openaire +1 more source
Twistor Strings with Flavour [PDF]
, 2007 We explore the tree-level description of a class of N=2 UV-finite SYM theories with fundamental flavour within a topological B-model twistor string framework.
Papageorgakis, Constantinos +6 more
core +1 more source
Can leptonic mixing matrix have a Wolfenstein form?
Journal of High Energy Physics, 2023 We analyze the possibility of the leptonic mixing matrix having a Wolfenstein form at the Grand Unified Theory scale. The renormalization group evolution of masses and mixing angles from the high scale to electroweak scale, in certain new physics ...
Ankur Panchal +2 more
doaj +1 more source
Heavy flavours: theory summary [PDF]
AIP Conference Proceedings, 2005 6 pages. Talk given at DIS 2005, XIII Workshop on Deep Inelastic Scattering, April 27-May 1, 2005, Madison, WI, U.S ...
openaire +2 more sources
Unoriented quivers with flavour [PDF]
, 2014 We discuss unoriented quivers with flavour that arise from D3-branes at local orbifold singularities, in the presence of Omega-planes and non-compact D7-branes. We produce a wide class of unoriented quiver gauge theories, including new instances of N = 1
Inverso G. +3 more
core +1 more source
Lepton Flavour Violation Theory [PDF]
Proceedings of The 13th International Conference on B-Physics at Hadron Machines — PoS(BEAUTY 2011), 2011 8 pages, contribution to the proceedings of "The 13th International Conference on B-Physics at Hadron Machines" (April 2011 ...
openaire +2 more sources
Quarks at the modular S 4 cusp
Journal of High Energy Physics, 2023 We analyse the possibility of describing quark masses, mixing and CP violation in S 4 ′ $$ {S}_4^{\prime } $$ modular flavour models without flavons. We focus on the case where the closeness of the modulus to the point of residual ℤ 3 ST $$ {\mathbb{Z ...
I. de Medeiros Varzielas +3 more
doaj +1 more source