Flavour Physics: the questions, the clues and the challenges

Details Flavour Physics: the questions, the clues and the challenges Flavour Physics: the questions, the clues and the challenges

1999-11-13

arxiv.org/abs/hep-ph/9911347v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

22 pages, 16 figures, Plenary talk at EPS HEP '99, Tampere, Finland, July 1999 2nd version: references added

Scientific paper

Flavour physics addresses some of the questions for which the Standard Model does not provide a satisfactory and complete answer: the origin of the replication of the fundamental constituents and of their mass hierarchy. This paper reviews some of the theoretical approaches and the experimental strategies that can lead us to a more complete picture. Results included in this review are |V_{cb}|= 0.0382 +/- 0.0032, |V_{ub}/V_{cb}|=0.085 +/- 0.023 and a preliminary measurement of the branching fraction of B -> pi^+ pi ^- = (0.47 ({+0.18}-{-0.15}) +/- 0.06) x 10^{-5}.}

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