RANK-ONE MASS MATRIX AND PHENOMENOLOGICAL CONSTRAINTS

1992 ◽  
Vol 07 (09) ◽  
pp. 757-762
Author(s):  
MANOJ K. SAMAL
Keyword(s):  
Top Quark ◽  
Quark Mass ◽  
Mass Matrix ◽  
Top Quark Mass ◽  
Mass Matrices ◽  
Rank One

We give the phenomenological constraints for a scheme which was recently proposed to investigate the approximately symmetric KM matrix in relation to the rank-one quark mass matrices. The allowed ranges for the parameters in this scheme are given. It is shown that out of the three interesting solutions of the symmetric KM matrix discussed in this scheme one is inconsistent with experiments, whereas another one requires a very heavy top quark mass (m t ≈255 GeV ) to be consistent.

EVADING THE TOP MASS BOUND IN THE FRITZSCH SCHEME

1992 ◽  
Vol 07 (04) ◽  
pp. 309-313 ◽  
Author(s):  
SUBHASH RAJPOOT
Keyword(s):  
Top Quark ◽  
Quark Mass ◽  
Mass Matrix ◽  
Diagonal Element ◽  
Present Knowledge ◽  
Top Quark Mass ◽  
Mixing Angles ◽  
Mass Matrices ◽  
Top Mass ◽  
Existing Data

The Fritzsch ansatz for the quark mass matrices will run into conflict with the existing data on the Cabibbo-Kobyashi-Maskawa mixing angles if the top quark mass turns out to be much greater than 90 GeV. A modification of the Fritzsch scheme is presented in which only one diagonal element of the quark mass matrix vanishes. The new scheme is still simple to analyze exactly and can easily accommodate top quark mass as heavy as 250 GeV or more without conflicting with our present knowledge on the weak interaction mixing angles.

DEMOCRATIC QUARK MASS MATRIX AS AN ORIGIN OF SYMMETRIC KM MATRIX

1993 ◽  
Vol 08 (15) ◽  
pp. 1387-1397 ◽  
Author(s):  
MORIMITSU TANIMOTO
Keyword(s):  
Top Quark ◽  
Quark Mass ◽  
Mass Matrix ◽  
Top Quark Mass ◽  
Absolute Value ◽  
The Absolute

The symmetric KM matrix is derived from the democratic quark mass matrix with the off-diagonal corrections. The obtained KM matrix is almost independent of the absolute value of the top-quark mass. The predicted CP violating phase ϕ is around 25º. Deviations from the symmetric limit are also studied quantitatively.

scholarly journals QUARK MASS MATRIX WITH A STRUCTURE OF A RANK-ONE MATRIX PLUS A UNIT MATRIX

1995 ◽  
Vol 10 (04) ◽  
pp. 289-294 ◽  
Author(s):  
HIDEO FUSAOKA ◽  
YOSHIO KOIDE
Keyword(s):  
Matrix Model ◽  
Charged Lepton ◽  
Quark Mass ◽  
Mass Matrix ◽  
Matrix Elements ◽  
Unit Matrix ◽  
Down Quark ◽  
Mass Matrices ◽  
Mass Ratios ◽  
Rank One

A quark mass matrix model [Formula: see text] is proposed where [Formula: see text] 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 three parameters (one in Mu and two in Md). The model can predict reasonable quark mass ratios (not only mu/mc, mc/mt, md/ms and ms/mb, but also mu/md) and Kobayashi–Maskawa matrix elements.

Ansatzfor the quark mass matrices allowing for a high top-quark mass

1991 ◽  
Vol 44 (3) ◽  
pp. R582-R586 ◽  
Author(s):  
Gustavo C. Branco ◽  
L. Lavoura
Keyword(s):  
Top Quark ◽  
Quark Mass ◽  
Top Quark Mass ◽  
Mass Matrices
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