# Top-quark-mass enhancement in a seesaw-type quark mass matrix

@article{Koide1996TopquarkmassEI, title={Top-quark-mass enhancement in a seesaw-type quark mass matrix}, author={Yoshio Koide and Hideo Fusaoka}, journal={Zeitschrift f{\"u}r Physik C Particles and Fields}, year={1996}, volume={71}, pages={459-467} }

We investigate the implications of a seesawtype mass matrix, i.e.,Mf⋍mLMF−1mR, for quarks and leptonsf under the assumption that the matricesmL andmR are common to all flavors (up-/down- and quark-/lepton-sectors) and the matricesMF characterizing the heavy fermion sectors have the form [(unit matrix)+bf (a democratic matrix)] wherebf is a flavor parameter. We find that by adjusting the complex parameterbf, the model can provide thatmt≫mb while at the same time keepingmu∼md without assuming any…

## 13 Citations

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## References

SHOWING 1-10 OF 12 REFERENCES

A BCS QUARK MASS MATRIX

- Physics
- 1988

The quark mass gap and quark mass hierarchy is obtained by introducing a BCS interaction among ur-quarks. A 3×3 quark mass matrix with equal matrix elements, i.e., with all ur-flavors interacting…

Quark Mass Matrix with a Structure of a Rank One Matrix Plus a Unit Matrix

- Physics
- 1995

A quark mass matrix model is proposed where and Oq is a unit matrix plus a rank-one matrix. Up- and down-quark mass matrices Mu and Md are described in terms of charged lepton masses and additional…

The weak mixing angles in gauge models with horizontal symmetry — A new approach to quark and lepton masses

- Physics
- 1983

Commutator of the quark mass matrices in the standard electroweak model and a measure of maximal CP nonconservation.

- PhysicsPhysical review letters
- 1985

Experimental data indicate that CP is nowhere maximally nonconserved and the question of maximal CP nonconservation is discussed.

Evidence for top quark production in p-barp collisions at sqrt s =1.8 TeV.

- PhysicsPhysical review letters
- 1994

We summarize a search for the top quark with the Collider Detector at Fermilab (CDF) in a sample of [ital [bar p]p] collisions at [radical][ital s] =1.8 TeV with an integrated luminosity of 19.3…

Evidence for top quark production in p p collisions at s = 1.8 TeV

- Physics
- 1994

We present the results of a search for the top quark in 19.3 pb−1 of p¯p collisions at √s =1.8 TeV. The data were collected at the Fermilab Tevatron collider using the Collider Detector at Fermilab…

CP Violation in the Renormalizable Theory of Weak Interaction

- Physics
- 1973

In a framework of the renormalizable theory of weak interaction, problems of CP-violation are studied. It is concluded that no realistic models of CP-violation exist in the quartet scheme without…

Should the Renewed Tau Mass Value 1777 MeV BE Taken Seriously

- Physics, Chemistry
- 1993

It is pointed out that the renewed value of tau mass, mr=1777 MeV, is in excellent agreement with the prediction mr=1776.97 MeV from a charged lepton mass formula based on an SU(3)-family nonet…

Neutrino Mass and Spontaneous Parity Nonconservation

- Physics
- 1980

In weak-interaction models with spontaneous parity nonconservation, based on the gauge group $\mathrm{SU}{(2)}_{L}\ensuremath{\bigotimes}\mathrm{SU}{(2)}_{R}\ensuremath{\bigotimes}\mathrm{U}(1)$, we…