Precise tests of a quark mass texture

Details Precise tests of a quark mass texture Precise tests of a quark mass texture

1998-12-16

arxiv.org/abs/hep-ph/9812384v2

Nucl.Phys. B551 (1999) 93-101

Physics

High Energy Physics

High Energy Physics - Phenomenology

11 pages, 3 eps figures, uses amsmath and epsfig

Scientific paper

10.1016/S0550-3213(99)00215-1

The relations $|V_{ub}/V_{cb}|=(m_u/m_c)^{1/2}$ and $|V_{td}/V_{ts}|=(m_d/m_s)^{1/2}$ between the CKM matrix elements and the quark masses are shown to imply a remarkably precise determination of the CKM unitarity triangle or of the Wolfenstein parameters $\rho$, $\eta$ consistent with the data so far. We view this as a clean test of a quark mass texture neatly arising from a hierarchical breaking of a U(2) flavour symmetry.

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