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We summarize the results showing that all existing data on mixing between up and down fermion states (i.e. CKM matrix and neutrino oscillations) and on the hierarchical quark and lepton mass ratios between generations are consistent with…

High Energy Physics - Phenomenology · Physics 2009-11-10 ST Tsou , JS Palmer

It is shown that all existing data on mixing between up and down fermion states (i.e. CKM matrix and neutrino oscillations) and on the hierarchical quark and lepton mass ratios between generations are consistent with the two phenomena being…

High Energy Physics - Phenomenology · Physics 2007-05-23 ST Tsou

It is shown that a fermion mass matrix changing in orientation (rotating) with changing scales can give a simple yet near-quantitative explanation for quark mixing, neutrino oscillations and the fermion mass hierarchy.

High Energy Physics - Phenomenology · Physics 2007-05-23 J Bordes , HM Chan , ST Tsou

It is shown that when the mass matrix changes in orientation (rotates) in generation space for changing energy scale, then the masses of the lower generations are not given just by its eigenvalues. In particular, these masses need not be…

High Energy Physics - Phenomenology · Physics 2009-02-09 Jose Bordes , H. M. Chan , S. T. Tsou

The fermion mass matrix, in addition to having eigenvalues (masses) which run, also changes its orientation (rotates) with changing energy scales. This means that its eigenstates at one scale will no longer be eigenstates at another scale,…

High Energy Physics - Phenomenology · Physics 2011-02-11 J Bordes , HM Chan , ST Tsou

The idea of a rank-one rotating mass matrix (R2M2) is reviewed detailing how it leads to ready explanations both for the fermion mass hierarchy and for the distinctive mixing patterns between up and down fermion states, which can be and…

High Energy Physics - Phenomenology · Physics 2015-05-27 Michael J Baker , J. Bordes , H. M. Chan , S. T. Tsou

The recent evidence for neutrino oscillations stimulate us to discuss again the problem of fermion masses and mixings in gauge theories. In the standard model, several forms for quark mass matrices are equivalent. They become ansatze within…

High Energy Physics - Phenomenology · Physics 2008-11-26 D. Falcone

Dynamical equations for fermion masses are derived using high scale universal mass generation and consequent mass evolution due to $SU(3), SU(2)$, and U(1$ gauge interaction. Assuming mass generation at the GUT scale $M=10^{14}$ GeV, one…

High Energy Physics - Phenomenology · Physics 2011-06-21 Yu. A. Simonov

Fermion mass matrices generally rotate in generation space under scale changes, which can lead to fermions of different generations transmuting into one another. The effect is examined in detail and its cross-section calculated for $\gamma…

High Energy Physics - Phenomenology · Physics 2007-05-23 S. T. Tsou

The change in orientation in generation space (rotation) of the fermion mass matrix with changing scales can lead to flavour-violations through just the kinematics of a non-diagonal mass matrix. Such effects for the reactions: $e^+ e^-…

High Energy Physics - Phenomenology · Physics 2007-05-23 J Bordes , HM Chan , ST Tsou

A phenomenological theory of fermion masses and mixings is constructed within the framework of a four- family symmetry. It is found that the most favored set of relevant CKM elements are $|V_{us}|\approx 0.222$, $|V_{cb}|\approx 0.044$,…

High Energy Physics - Phenomenology · Physics 2010-11-01 P. Q. Hung

In these notes, we review the main results of our approach to fermion masses. The marge mass ratios between fermions, confronted with a unique breaking mechanism leading to vector bosons masses, led us to consider the possibility that they…

High Energy Physics - Phenomenology · Physics 2014-09-30 J-M Frère , M Libanov , S Mollet , S Troitsky

The charged fermion masses of the three generations exhibit the two strong hierarchies m_3 >> m_2 >> m_1. We assume that also neutrino masses satisfy m_{nu 3} > m_{nu 2} > m_{nu 1} and derive the consequences of the hierarchical spectra on…

High Energy Physics - Phenomenology · Physics 2015-02-02 Wolfgang Gregor Hollik , Ulises Jesus Saldana Salazar

In this talk I review the `puzzles' associated with the fermion mass matrices and describe some recent attempts to resolve them, at least partially. Models which attempt to explain the observed mass hierarchy as arising from radiative…

High Energy Physics - Phenomenology · Physics 2007-05-23 K. S. Babu

Reliable values of quark and lepton masses are important for model building at a fundamental energy scale, such as the Fermi scale M_Z \approx 91.2 GeV and the would-be GUT scale \Lambda_GUT \sim 2 \times 10^16 GeV. Using the latest data…

High Energy Physics - Phenomenology · Physics 2008-11-26 Zhi-zhong Xing , He Zhang , Shun Zhou

The combined requirements, of (i) a natural solution to the fermion mass hierarchy problem and (ii) an explanation of both the atmospheric and solar neutrino problems, lead to an essentially unique picture of neutrino masses and mixing…

High Energy Physics - Phenomenology · Physics 2009-10-30 C. D. Froggatt , M. Gibson , H. B. Nielsen

I report the analysis performed on fermion masses and mixing, including neutrino mixing, within the context of a model with hierarchical radiative mass generation mechanism for light charged fermions, mediated by exotic scalar particles at…

High Energy Physics - Phenomenology · Physics 2008-11-26 Albino Hernandez-Galeana

Neutrino masses and mixings are investigated on the basis of a universal seesaw mass matrix model, in which quark (except for top) and charged lepton mass matrices M_f and neutrino mass matrix M_\nu are given by M_f \simeq m_L M_F^{-1} m_R…

High Energy Physics - Phenomenology · Physics 2009-10-30 Yoshio Koide

The {\it theory unifying spin and charges and predicting families}, proposed by N.S.M.B., predicts at the low energy regime two (in the mixing matrix elements decoupled) groups of four families. There are two kinds of contributions to mass…

High Energy Physics - Phenomenology · Physics 2011-12-20 A. Hernandez-Galeana , N. S. Mankoc Borstnik

In recent papers a microscopic model for the SM Higgs mechanism has been proposed, and an idea how to determine the 24 quark and lepton masses of all 3 generations has emerged in that framework. This idea is worked out in detail here by…

High Energy Physics - Phenomenology · Physics 2015-06-19 Bodo Lampe
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