Indirect Measurement of the Vertex and Angles of the Unitarity Triangle

Details Indirect Measurement of the Vertex and Angles of the Unitarity Triangle Indirect Measurement of the Vertex and Angles of the Unitarity Triangle

1998-10-13

arxiv.org/abs/hep-ph/9810333v1

Phys.Rev.D59:113011,1999

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages, submitted to Physics Letters B

Scientific paper

10.1103/PhysRevD.59.113011

The precise measurements of the Bd oscillation frequency and the limit on the Bs one one as well as the determination of the Cabibbo-Kobayashi-Maskawa matrix element Vub improve the constraints on the other elements of this matrix. A fit to the experimental data and the theory calculations leads to the determination of the vertex of the unitarity triangle as: rho = 0.160 -0.070 +0.094 eta = 0.381 -0.058 +0.061. The values of its angles, in their customary definition in terms of sines for alpha and beta, are found to be: sin(2 alpha) = 0.06 -0.42 +0.35 sin(2 beta) = 0.75 +/- 0.09 gamma = 68 -12+11o. Indirect information on non-perturbative QCD parameters, on the presence of a CP violating complex phase in the CKM matrix and on the Bs oscillation frequency are also extracted.

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