Results 21 to 30 of about 1,555 (262)
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 $$ {\mathbb{Z ...
I. de Medeiros Varzielas +3 more
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Journal of High Energy Physics, 2023 We construct an SU(5) grand unified model in which the hierarchies of the quark and lepton masses and mixing are explained by the Γ 6 ′ $$ {\Gamma}_6^{\prime } $$ modular flavor symmetry.
Yoshihiko Abe +3 more
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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
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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
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SPONTANEOUS CP IN A SUSY THEORY OF FLAVOUR
String Phenomenology 2003, 2004 We present a model based on an SU(3) family symmetry providing a full description of quark and lepton masses and mixing angles. CP is spontaneously broken in the flavour sector reproducing the observed results of the Jarlskog invariant in the CKM mixing matrix.
Vives, O, Ross, G, Velasco-Sevilla, L
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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 ...
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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
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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 ...
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EPJ Web of Conferences, 2013 We review recent progress in measuring and theoretically understanding flavorchanigng processes, and the corresponding constraints derived on possible extensions of the Standard ...
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