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

Abstract

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.

LaTex 9 pages

References in corpus (3)

• Measurement of the CP-Violating Asymmetry Amplitude sin2beta
• Improved Measurement of Mixing-induced CP Violation in the Neutral B Meson System
• Hierarchical Neutrino Masses and Large Mixing Angles from the Fritzsch Texture of Lepton Mass Matrices

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