Unique Mass Texture for Quarks and Leptons

Details Unique Mass Texture for Quarks and Leptons Unique Mass Texture for Quarks and Leptons

1999-03-22

arxiv.org/abs/hep-ph/9903428v2

Phys.Rev.D60:051301,1999

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages, LaTeX,some changes in the references,minor changes in the text,to appear in Phys Rev D(Rapid communications)

Scientific paper

10.1103/PhysRevD.60.051301

Texture specific quark mass matrices which are hermitian and hierarchical are examined in detail . In the case of texture 6 zeros matrices, out of sixteen possibilities examined by us, none is able to fit the low energy data (LED), for example, $V_{us} = 0.2196 \pm 0.0023$, $V_{cb} = 0.0395 \pm 0.0017$, $\frac{V_{ub}}{V_{cb}} = 0.08 \pm 0.02$, $V_{td}$ lies in the range $0.004 - 0.013$ (PDG). Similarly none of the 32 texture 5 zeros mass matrices considered is able to reproduce LED. In particular, the latest data from LEP regarding $|V_{ub}|/|V_{cb}|(=0.093\pm0.016)$ rules out all of them. In the texture 4 zeros case, we find that there is a unique texture structure for $U$ and $D$ mass matrices which is able to fit the data.

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