DISCRETE '08: Symposium on Prospects in the Physics of Discrete Symmetries

Session

Parallel Session B. Family symmetries-I

11 Dec 2008, 14:30

Valencia, Spain

Conveners

Parallel Session B. Family symmetries-I

• Graham ROSS (Oxford University)

76. Searches for Fourth Generation Particles and Heavy Neutrinos at CMS

Kai-Feng Chen (Physics Department - National Taiwan University (NTU))

11/12/2008, 14:30

Family Symmetries

This presentation will adress the experimental issues and discovery potentials for a fourth generation charge -1/3 quark decaying to a W and a top quark and for a right-handed W that decays to a lepton and a heavy neutrino, predicted by Left-Right-symmetric models. Both produce almost background-free final states containing multiple leptons and jets. The residual backgrounds and reach for each...

68. Electric Dipole Moments from Spontaneous CP Violation in SU(3)-flavoured SUSY

Mr Joel Jones Perez (Universitat de Valencia)

11/12/2008, 14:50

Family Symmetries

The SUSY flavour problem is deeply related to the origin of flavour and hence to the origin of the SM Yukawa couplings themselves. Since all CP-violation in the SM is restricted to the flavour sector, it is possible that the SUSY CP problem is related to the origin of flavour as well. In this work, we present three variations of an SU(3) flavour model with spontaneous CP violation. Such...

13. LFV and Dipole Moments in Models with A4 Flavour Symmetry

Mr Luca Merlo (Università di Padova & INFN Padova)

11/12/2008, 15:10

Family Symmetries

It is presented an analysis on lepton flavour violating transitions, leptonic magnetic dipole moments and electric dipole moments in a class of models characterized by the flavour symmetry A4 x Z3 x U(1)_{FN}, whose choice is motivated by the approximate tri-bimaximal mixing observed in neutrino oscillations. A low-energy effective Lagrangian is constructed, where these effects are dominated...

66. Lepton flavour violating processes in an S(3)-invariant extension of the Standard Model

Alfonso Mondragon (Instituto de Fisica, UNAM)

11/12/2008, 15:30

Family Symmetries

A variety of lepton flavour violating effects related to neutrino oscillations and mixings will be systematically discussed in the framework of a minimal S3-invariant extension of the Standard Model. We will give explicit analytical expressions for the matrices of the Yukawa couplings, the results of a computation of the branching ratios of some selected flavour-changing neutral...

69. Embedding discrete symmetries: Large neutrino mixingin SO(10) GUT

Prof. emilio torrente-lujan (dept. fisica)

11/12/2008, 15:50

Family Symmetries

We present a common explanation of the fermion mass hierarchy and the large lepton mixing angles in the context of a grand unified flavor and gauge theory (GUTF). Our starting point is a SU(3)xU(1) flavor symmetry and a SO(10) GUT, a basic ingredient of our theory which plays a major role is that two different breaking pattern of the flavor symmetry are at work. On one side, the dynamical...

7. Discrete Rotational Subgroups of the Standard Model dictate Family Symmetries and Masses

Dr Frank Potter (Sciencegems.com)

11/12/2008, 16:10

Family Symmetries

Family symmetries of leptons and quarks are expressions of specific discrete rotational subgroups of the Standard Model gauge group. Their discrete symmetry properties include elliptic modular functions and the invariant J from which one predicts mass ratios, without any need for a Higgs. The family hierarchies, the origin of baryon number, and exact color symmetry are explained. The geometric...