Four-Zero Texture of Hermitian Quark Mass Matrices and Current Experimental Tests

Details Four-Zero Texture of Hermitian Quark Mass Matrices and Current Experimental Tests Four-Zero Texture of Hermitian Quark Mass Matrices and Current Experimental Tests

2002-12-13

arxiv.org/abs/hep-ph/0212195v1

Phys.Lett.B555:63-70,2003

Physics

High Energy Physics

High Energy Physics - Phenomenology

LaTex 9 pages

Scientific paper

10.1016/S0370-2693(03)00048-0

We show that the four-zero texture of Hermitian quark mass matrices can survive current experimental tests: it is able to yield sufficiently large predictions for the flavor mixing parameter $|V_{ub}/V_{cb}|$ and the CP-violating parameter $\sin 2\beta$, without fine-tuning of the input values of quark masses, provided the (2,2), (2,3) and (3,3) elements of up and down mass matrices roughly satisfy a geometrical hierarchy. The successful relations $|V_{us}| \approx \sqrt{m_u/m_c + m_d/m_s}$ and $|V_{td}/V_{ts}| \approx \sqrt{m_d/m_s}$ obtained previously from the six-zero texture of Hermitian quark mass matrices remain unchanged in the new ansatz.

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